bluuebunny/crossref_metadata_2025 huggingface dataset:
LABOR MARKET OF UKRAINE: TRENDS IN THE CONDITIONS OF WAR AND ACTUALIZATION OF THE PROBLEM OF UNEMPLOYMENT
Authors:   National University “Zaporizhzhia Polytechnic”, Zaporizhzhia, Maryna Gudz
Published: July 2023

The context of the martial law largely changed organisation of social and economic process in our country. To maintain stability is difficult task, so today we can see a lot of significant imbalances, including the labor market. The loss of the ability to manage supply and demand for labour, active movement of human capital in search of safety and protection and shortage of specialists in specific areas and regions, outflow of personnel abroad, reduced numbers of vacancies as a result of failure of the business to resist losses, became a key problems. The problem of increasing level of unemployment took on renewed significance because the situation is complicated by rising inflation and prices, erosion in in saving money opportunities, slowing economy and bankruptcy of business. The set of these factors became a reason of unprecedented changes on labor market; optimizing the situation is an important step on the way of achieves stability and predictability of Ukrainian economy. The purpose of the article is to determine the state of labor market in Ukraine in the context of war conditions by analyzed key trends and problem of unemployment, which was activated under military action. In the course of the research, there were used general scientific theoretical methods: comparison (for determine key trends in functioning of the labour market, changes in indicators), methods of abstraction, analysis and generalization (for draw conclusions on influence of military actions on labor market, generalize the changes in the demand and supply of labor in the context of uncertainty). In this science paper the essence of the labor market as a system of labor relations, which become arise as a result of movement of specific type of resources – human capital; the main trends, limitations and risks, which have influence on labor market in the context of full-scale war were determined. Dynamic of unemployment level, actualization problem of misbalance demand and supply of labor was analyzed based on statistic and analytic data. The practical significance of research is associated with the necessity to study of main trends on labor market and search important tools, which can improvement of the current situation, balance the demand and supply of labor, stop uncontrolled growth of unemployment. Prospects for research in this area are due to the necessity to search methods and tools of adjusting for unemployment and employment, which will be helpful in the context of achieve stability on the Ukrainian labor market in the long term.
WAR AS A FACTOR IN THE FORMATION OF TAX REVENUES OF THE BUDGET OF UKRAINE
Authors:   Yuriy Fedkovych Chernivtsi National University, Chernivtsi, Nataliia Bak
Published: July 2023

Taxes are the most acceptable tool to form budget resources of a modern state. Their importance increases significantly as force majeure circumstances, such as a war, influence the formation of a country's budget revenues. During martial law, the public authorities of Ukraine are forced to use tax revenues as the basic source of financing the needs of defense against the external enemy. An important scientific task is to study the formation of tax revenues at various stages of military aggression and identify the main directions of the war's influence. The current legislation of Ukraine, the work of domestic and foreign scientists regarding the development of the budget and tax sphere of economic relations became the theoretical and methodological basis of the research. The construction of the article was influenced by the application of the method of comparative analysis and synthesis - when assessing the tax revenues of the budget of Ukraine at various stages of russia's military aggression, theoretical generalization - for formulating the vectors of the influence of the war factor on the state of budget revenues, expert and analytical methods - when justifying proposals for the activation of tax potential formation of the budget of Ukraine. FIN AN C E, A CC O U N T IN G A ND TA XA TI O N Issue I (89), 2023 23 Among such vectors, the author's attention is focused on the objective reduction of the existing tax base; the influence of pricing processes within the commodity and capital markets; changes in tax policy (legislation); new variations of evasive behavior of taxpayers; not always justified and productive improvement of tax payment management and administration procedures on the part of controlling authorities. The cumulative impact of the outlined factors was manifested in different ways in 2013-2015 and 2021-2022 in terms of quantitative and structural indicators of tax revenues. The dependence of the state budget on the results of taxation of various income types, as well as real estate objects, has significantly increased. This indicates that the main burden of budgetary financing of defense needs is borne by the subjects of the official economy and the population. Territorial communities, primarily in the rear regions, became the main beneficiaries of quantitative changes in the tax revenues of the budget due to the war. The article offers the author's view on the possibility of introducing a target surcharge to the rates of already existing taxes, in particular, value added tax. The policy of tax revenue formation of the country's budget will require significant changes to ensure the financial system’s stability in the post-war period. Therefore, further research should be focused on substantiating directions for harmonizing the fiscal interests of the state and the financial capabilities of its taxpayers.
SECURITY MANAGEMENT OF HOSPITALITY INDUSTRY ENTERPRISES IN MODERN CONDITIONS
Authors:   Chernivtsi Institute Trade and Economics of SUTE, Chernivtsi, Tetiana Nezveshchuk-Kohut , Viktoriia Yazina ,   University of Customs and Finance, Dnipro
Published: July 2023

The article reveals the issue of guest safety for every hotel business is of primary importance. However, among the large number of security systems on the world and national markets, there is a need to organize such a security system in hotels, which should be not only effective and functional, but also economically profitable and easy to operate. Effective management of the security system should be based on the creation of integrated solutions that increase the level of security and at the same time improve it. The top management of hotel enterprises should try to ensure the international level of service quality, namely safety. Hotel security management involves not only a high level of investment in the security system itself, but also the creation of such a «safe climate» that can be achieved by effective management. The purpose of the article is to identify the main elements of hotel security management and develop a general security management methodology for further possible use in the process of operation and development of hospitality industry enterprises. The theoretical and methodological basis of the dissertation work became the provisions of economic theory, set forth in the works of leading foreign and domestic scientists. The article highlights the main characteristics of hotel security management and defines its role in the functioning and development of hotel enterprises. The essence of security has been studied and the main threats to the hotel that may arise in the process of hotel management have been considered. A general method of security management of hotel enterprises on a protocol basis is proposed. The practical significance lies in the development of scientific and practical approaches to the creation of an effective hotel management apparatus at the national level. Carrying out a theoretical justification of the choice of a certain security management system. Development of new areas of hotel security management based on the results of the specified assessment.
Estimating Economic Returns of Sheep and Goat Rearing in Karak Governorate
Authors: Bdour Mohammed Ali , Zyadeen Ayman Frid , Alkawalit Nayl Twfiq
Published: July 2023

This study aims to estimate the economic returns of sheep and goat rearing as well as total cost and returns to identify the profit margin made by out each farmer. The random sample consists of 196 breeders who breed 58240, sheep and goats in the Karak governorate of Jordan. The sample represents 13% of the total sheep and goat population (445300) in Karak. The primary data were collected through personal interviews with farmers using a questionnaire. The questionnaire was designed to achieve the study objectives and consisted of three themes. The first theme was questioning the variables that relate to the farmer’s personal characteristics (demography). The second theme contains a set of questions regarding financial production cost and return parameters during the milking season including the marketing process. The third theme consists of information about the return from selling individual sheep and goats and products such as wool and manure. The collected data from the questionnaire were statistically analyzed following Likert 5 Scale The financial analysis was conducted using Gross margin analysis. The findings of the analysis show that 52.6% of farmers were above 50 years old. the average size of the herd was 297. The variable cost for the herd was 13067.98, Jordanian Dinar, while the total returns were 17104.54, JOD, and the Gross margin ratio was 0.23599. The amount of milk production was (3,494.4) tons in a season lasting 3 months on average. The average prices of milk of goats and sheep are 1.1 and 0.87 JOD/kg, respectively, Moreover, 53.3% of the farmers processed the domestically produced milk into Jameed, butter, and margarine. The result of the analysis of gross margin was 30%, indicating the sheep and goats rearing projects make profits in Karak Governorate. The study recommends that a national program should be developed to maintain local breeds, set appropriate standards, and define trademarks for the local production of Jameed and domestic margarine.
THE RELATIONSHIP OF CREATIVITY DOMAINS WITH BIG FIVE PERSONALITY TRAITS: A STRUCTURAL EQUATION MODELLING ANALYSIS
Authors: Awawdeh Malek N. , Lim Hooi Lian
Published: July 2023

The importance of fostering creativity in higher education has grown increasingly recognized. In this information age, universities have acknowledged the advantages of creativity for both individuals and societies. This study established a model to use Structural Equation Modeling (SEM) to analyse the relationship between creativity domains and personality traits based on the psychometric method and expanding on the creativity domains theory and the traits theory. The measurement model survives the validity and reliability test. The structural model has shown acceptable goodness of fit tests. The instruments were administered to 415 Malaysian undergraduate students. The study concludes that personality traits have a significant relationship with creativity domains and can theoretically enrich the current research of creativity assessment in higher education. This is an essential skill for students to develop, with implications both for their personal futures and for society as a whole.
Investigation on the motion of droplets excited by Lamb waves on an inclined non-piezoelectric curved substrate
Authors: Liang Wei , Gu He , Wang Tong , Wang Zichen , Yang Zhaodong
Published: July 2023

In this work, the motion of droplets on an inclined non-piezoelectric curved substrate is investigated to study the performance of the Lamb waves (LWs)-driven surface cleaning of the camera lens or other optical components. The droplets do not slide forward on the curved substrate with an inclination less than 5° is verified by experiments. And then, the shape changes of droplets are discussed from experiments and simulation. A two-phase flow simulation model is established using the level set method, which the deformation of gas-liquid interface can be clearly observed when the droplet moves. The observation results that the movement of droplets on the inclined curved glass driven by LW are propelled periodically in a stretching and spreading phases. To investigate the effect of LWs on droplets removal, the movement distance of droplets are measured in four main factors, namely, substrate inclination, input power, droplet volume and surface curvature.
DOES SUPERFICIAL CERVICAL PLEXUS NERVE BLOCK HAVE A ROLE IN DAY CARE MAXILLOFACIAL SURGERY AS A SUBSTITUTE TO GENERAL ANESTHESIA?
Authors: Prasad Prasad , Chandgothia Nehal , Chandra Debnath Subhas , Nath Tanmoy
Published: July 2023

Routinely, mandibular nerve blocks and local inltrations are used for achieving anesthesia in oral and perioral region. Certain procedures which require additional anesthesia for dissection in wide area and deeper planes (lymph node biopsy, mandibular angle fractures etc) would not be provided by regular nerve blocks. Regional nerve blocks in cervical region can be used as an addition to conventional nerve blocks when these procedures are being performed. The supercial cervical plexus nerve block (SCPNB) produces adequate regional anesthesia to the maxillofacial region and neck. It is easy and simple technique to perform, can be used in selective cases as a substitute to general anesthesia (GA). We performed an enbloc excision of osteoma from angle of mandible in a 13-year-old female patient under regional nerve block (SCPNB) and presented the same in this paper with literature back up.
A PROSPECTIVE ANALYSIS COMPARING STOPPA'S REPAIR WITH CONVENTIONAL REPAIR IN COMPLEX BILATERALAND RECURRENT INGUINAL HERNIAS
Authors: Rajaram Wagh Madhukar , U. Gohil Kamlesh , Babubhai Parmar Rahul
Published: July 2023

The reconstruction of the posterior barrier of the groin represents one of the major objectives in groin hernia repair. There are 2 primary methods used to achieve this objective: “tissue repair technique” and “tension-free repair”. Recently, tension-free repair has become the gold standard procedure for repairing inguinal hernias. Many techniques have been described by different authors. Tension-free repair involves the use of synthetic prosthetic materials for rebuilding the posterior inguinal wall. The prosthetic materials, now disposable, have a well toleratedbiore activity, allow efcient broplasia, diminish postoperative pain, and signicantly reduce the recurrence rate and convalescence period. The Stoppa procedure, or giant prosthetic reinforcement of the visceral sac (GPRVS), is performed by wrapping the lower part of the parietal peritoneum with prosthetic mesh. The mesh contributes to a physiological healing process that creates a special bilateral anatomical reinforcement in the inguinal region, which effectively prevents inguinal hernia recurrence.
Spatial variation of sunflower cultivation in Iraq (quantitative geographic study)
Authors: حمادي كاظم
Published: July 2023

The sunflower crop needs different temperatures during the growth stages, as it does not grow at a low degree to less than (7) and a maximum (35%), and the optimum temperature for its growth ranges between (25-30) - (35) and the crop needs temperatures After the stage of germination until the stage of maturity, as the stage of germination of its seeds begins at a temperature ranging between (15_17°C), especially during the spring planting, but during the autumn planting, its seeds need a temperature of up to (30°C). ( ) Either during the vegetative growth stage, the sunflower crop needs a temperature ranging between (20_25°C) during the spring planting for the period March-April. As for the autumn planting, the crop needs (30°C), so its cultivation begins between the months of August-September until it reaches Their average temperature is between (32_36°C)
Evaluasi tingkat pengetahuan pasien terhadap penggunaan obat diabetes mellitus tipe II dirawat jalan rumah sakit Advent Medan
Authors: Darantika Windi , Meutia Rena
Published: July 2023

Salah satu aspek terpenting dalam hidup adalah kesehatan, terutama sekarang banyak orang yang menderita berbagai penyakit, salah satunya diabetes melitus. Penelitian ini bertujuan untuk mengetahui apakah ada hubungan antara pengetahuan pasien tentang penggunaan obat Diabetes Melitus tipe II dan tingkat pengetahuan pasien di RS Advent Medan. Studi ini memiliki desain cross-sectional dan bersifat deskriptif-analitik. Data dikumpulkan secara prospektif melalui kuesioner. Data juga dikumpulkan dari rekam medis pasien diabetes tipe II yang menjalani rawat jalan di Rumah Sakit Advent di Medan. Hasil penelitian ini akan menganalisis pengetahuan pasien tentang penggunaan obat diabetes melitus tipe II di poliklinik rawat jalan RS Advent Medan. Umur, tingkat pendidikan, jangka waktu pengobatan, pekerjaan, jenis kelamin, riwayat diabetes melitus, dan pengetahuan umum tentang diabetes melitus adalah semua informasi yang dimasukkan ke dalam daftar ini. Hasil penelitian berdasarkan tingkat pengetahuan dari 100 responden menunjukkan bahwa 42 responden (42%) memiliki tingkat pengetahuan baik, 50 responden (50%) memiliki tingkat pengetahuan cukup baik, dan 8 responden (8%) memiliki tingkat pengetahuan kurang baik. Diharapkan peneliti akan melakukan penelitian lebih lanjut dengan parameter yang berbeda.
PENGARUH PENERAPAN MODEL PROJECT BASED LEARNING BERBASIS SCIENCE TECHNOLOGY ENGINEERING ART AND MATHEMATICS TERHADAP HASIL BELAJAR SISWA SUBTEMA KEGIATAN BERBASIS PROYEK DAN LITERASI
Authors: Pratiwi Nur Amalia Kinanti , R. Teti Rostikawati  , Wawan S. Anwar
Published: July 2023

Pengaruh Penerapan Model Project Based Learning Berbasis Science Technology Engineering Art and Mathematics Terhadap Hasil Belajar Siswa Subtema Kegiatan Berbasis Proyek dan Literasi. Penelitian ini merupakan penelitian kuasi eksperimen yang bertujuan untuk mengetahui pengaruh model Project Based Learning Berbasis Science Technology Engineering Art and Mathematics terhadap hasil belajar siswa. Penelitian ini dilaksanakan di Sekolah Dasar Negeri Gunung Batu 2 Kecamatan Bogor Barat Kota Bogor kelas V-B dan V-C pada bulan Mei semester genap. Hasil penelitian menunjukan nilai N-Gain pada kelas eksperimen lebih berpengaruh dibandingkan dengan kelas kontrol. Pada hasil uji hipotesis penelitian thitung sebesar 2,23 lebih besar dari ttabel sebesar 2,003, menunjukan bahwa H0 (hipotesis nol) ditolak dan Ha (hipotesis alternatif) diterima. Berdasarkan hasil penelitian di atas, maka dapat dinyatakan bahwa penerapan model Project Based Learning Berbasis Science Technology Engineering Art and Mathematics memiliki pengaruh terhadap hasil belajar serta lebih efektif dari pembelajaran Konvensional pada subtema kegiatan berbasis proyek dan literasi.
MENUMBUHKAN DISIPLIN DIRI MELALUI DISIPLIN POSITIF RESTITUSI
Authors: Adlan Surya Saputra
Published: July 2023

The method of giving punishment in creating self-discipline in students is not effective. The punishment given will stimulate bullying in schools. The impact of punishment not only hurts physically but also mentally. They will grow into someone who is inferior and anti-social. In learning they become passive because they only focus on avoiding punishment. Likewise, giving rewards is not effective in fostering self-discipline in learners. This method actually makes learners dependent on rewards for good behavior and is counter-productive to the goal of self-discipline. Rewards do not foster internal motivation, responsibility and resilience in learners. This research uses the literature review method where data is obtained from various sources such as journals, e-books, and relevant references according to the topic raised. Positive discipline guides learners in fostering internal motivation so as to create long-term self-discipline. Positive discipline gives learners the freedom to correct and learn from their mistakes. Restitution is part of positive discipline with three steps, namely; 1) Stabilizing Identity; 2) Validating wrong actions; 3) Questioning class beliefs. The end result of the application of restitution positive discipline is the birth of self-discipline in students which is characterized by long-term good behavior. Schools that implement restitution positive discipline successfully reduce the number of offenses, learners are more likely to respect school rules and consider the consequences of their actions before violating. This indicates that restitution is successful in reducing negative behavior and bringing about long-term changes in learners' behavior.
PENGARUH MODEL PROJECT BASED LEARNING TERHADAP HASIL BELAJAR MATEMATIKA MATERI PENYAJIAN DATA
Authors: Az Zahra Nabila Rahmania , Elly Sukmanasa  , Fitri Anjaswuri
Published: July 2023

This study aims to determine the influence of the Project Based Learning model on the learning outcomes of mathematics data presentation material. This research conducted at SDIT Al Hikmah in second semester of the 2022/2023 school year. The research method used was a two group quasi-experiment design. The subject of this study fifth grade students SDIT Al Hikmah with a total 36 students. Data collection was carried out to obtain learning outcomes or N-gain is obtained using pretest and posttest. Researchers conducted a normality test with the lilliefors test of two samples normally distributed because the values of two samples were smaller than Ltabel. In the Project Based Learning class group, Lcount ≤ Ltable values are 0.024 ≤ 0.200, in the control class group the Lcalculate ≤ Ltable values are 0.072 ≤ 0.200. the homogeneity test the data is homogeneous because it is smaller than Ftable, the values are 1.006 ≤ 2.27. Furthermore, in the hypothesis test, tcount of 25.89 is greater than the ttable 2.03224, indicating that H0 is rejected and Ha is accepted. Thus, there is an influence of the Project Based Learning model on mathematics learning outcomes of data presentation material in class V SDIT Al Hikmah.
FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN KEJADIAN PERDARAHAN POST PARTUM DINI (EARLY POST PARTUM HEMORRHAGE) PADA IBU BERSALIN DI RUMAH SAKIT X JAKARTA PUSAT
Authors: Dyah Woro Kartiko Kusumo Wardani  , Baharika Suci Dwi Aningsih  , Dewi Novitasari Suhaid  , Eviyani Margaretha Manungkalit  , Agustina Ida Pratiwi
Published: July 2023

Tujuan Penelitian: Untuk menganalisis factor-faktor yang berhubungan dengan kejadian perdarahan post partum dini (early post partum) pada ibu bersalin di rumah sakit X Jakarta Pusat. Metode Penelitian : Desain penelitian yang digunakan adalah analitik observasional melalui pendekatan case control dengan menggunakan data sekunder di kamar bersalin Rumah Sakit X Jakarta Pusat. Populasi dalam penelitian ini adalah seluruh ibuyang melahirkan di kamar bersalin rumah sakit X Jakarta Pusat dengan jumlah responden sebanyak 108 orang. Uji statistik yang digunakan adalah uji Chi-Square. Hasil Penelitian : Analisis yang didapatkan dari 108 responden menunjukkan Sebagian besar ibu yang bersalin di rumah sakit X Jakarta Pusat (88%) tidak mengalami perdarahan post partum dini, hampir seluruh ibu bersalin yang mengalami perdarahan (92,3%) berusia reproduksi yaitu 20-35 tahun, 53,8% memiliki paritas 1 atau >3, dan hampir seluruh responden (92,3%) memiliki bayi dengan berat badan lahir ≤4000gram. Kesimpulan: Hasil penelitian melalui uji Chi-square menunjukkan bahwa tidak terdapat hubungan yang signifikan antara usia ibu, paritas dan berat badan lahir dengan kejadian perdarahan post partum dini di rumah sakit X Jakarta Pusat.
HUBUNGAN FASILITAS BELAJAR DAN DUKUNGAN KELUARGA DENGAN MOTIVASI BELAJAR ONLINE PADA SISWA ASISTEN KEPERAWATAN
Authors: Yuliani Indah , Gunardi Saiful , Susaldi
Published: July 2023

Latar belakang: Setiap orang memiliki tingkat kemauan atau motivasi yang berbeda, memiliki alasan yang berkaitan langsung dengan suatu kebutuhan orang tersebut untuk memenuhi kebutuhannya. Artinya, makin besar suatu kebutuhan seseorang maka akan semakin besar pula dorongan/kemauan dari dalam diri seseorang guna melakukan apa yang di inginkannya. Motivasi belajar sangatlah penting untuk mengukur ketertarikan para siswa dalam memilih suatu tempat belajar yang diharapkan sesuai dengan minatnya. Berdasarkan studi pendahuluan bahwa terdapat 6 dari 10 siswa yang mengungkapkan bahwa kurang termotivasi dalam belajar karena fasilitas belajar dan dukungan keluarga yang kurang mendukung. Penelitian ini bertujuan untuk mengetahui hubungan antara fasilitas dan dukungan keluarga dengan motivasi belajar online siswa Asisten Keperawatan SMK Mitra Bakti Husada Bekasi, dengan populasi berjumlah 113 siswa dan sampel berjumlah 54 siswa yang dihitung menggunakan rumus slovin.

Metode: Penelitian dilakukan dengan pendekatan analitik kuantitatif dengan desain studi crosssectional.

Hasil: Hasil penelitian ini menunjukkan bahwa adanya hubungan antara fasilitas belajar dengan motivasi belajar online siswa dengan p value 0,035 dan adanya hubungan antara dukungan keluarga dengan motivasi belajar online siswa dengan p value 0,003.

Kesimpulan: Penelitian ini membuktikan bahwa ada hubungan antara fasilitas belajar dan dukungan keluarga dengan motivasi belajar online siswa.
Evaluación del control interno en la gestión financiera y contable de las empresas camaroneras de la ciudad de Machala
Authors: Mora Yaure Erika Anabell , Morocho Roman Zaida Patricia , León Serrano Lady Andrea
Published: July 2023

El control interno se clasifica como una herramienta institucional que permite verificar el estado de la empresa mediante la medición, gestión y planificación de las operaciones, manteniendo un seguimiento sobre la gestión financiera y contable como parte de las actividades necesarias para la operatividad de la empresa. El presente artículo tiene por objetivo, evaluar el control interno sobre la gestión financiera y contable de las instituciones dedicadas a la producción de camarón en la ciudad de Machala, estableciendo como metodología un enfoque cuantitativo descriptivo, de diseño no experimental-transversal, empleando como instrumentos: revisión bibliográfica y cuestionario cerrado sobre los componentes del control interno. Realizada la evaluación se observó que la mayor parte de los ítems evaluados en los componentes presentaban un porcentaje alto de cumplimiento, evidenciando un control interno satisfactorio por parte de las empresas, lo cual permite indicar las capacidades de las instituciones en la gestión de sus operaciones financieras y contables, contando con información correspondiente a su realidad durante el período.
Estrategias activas para la disortografía en los estudiantes de educación general básica
Authors: Parraga Mera Fanny Olga , Salinas Lascano Vanessa Fernanda , Moposita Calapucha Idiana Alexandra , Guamanquispe Rumipamba Ana Isabel , Almeida Calvopiña Carlos Roberto
Published: July 2023

La educación escolar es la herramienta más importante en el progreso y desarrollo de la sociedad; por lo tanto, es el único medio alternativo que puede mejorar los problemas económicos y sociales de un país. La presente investigación tiene como objetivo, investigar las estrategias activas para mejorar la disortografía en los estudiantes de educación general básica de la Unidad Educativa “Federico Gonzales Suárez”, cantón Francisco de Orellana, provincia de Orellana. La finalidad es fortalecer los conocimientos de los docentes en el proceso de enseñanza aprendizaje, la mayoría de educadores tienen que adaptar estrategias en su metodología educativa, la finalidad que la enseñanza sea eficiente y eficaz permitiendo lograr los objetivos del educador en enseñar. Por lo tanto, la investigación se fundamenta en la necesidad que el educador disponga de todas las herramientas necesarias y recursos para establecer las estrategias necesarias para corregir la disortografía en los estudiantes que presentan esta problemática.
Newly Discovered Wolf–Rayet Stars in M31
Authors: Neugent Kathryn F. , Massey Philip
Published: July 2023

The evolved massive star populations of the Local Group galaxies are generally thought to be well understood. However, recent work has suggested that the Wolf–Rayet (WR) content of M31 may have been underestimated. We therefore began a pilot project to search for new WRs in M31 and to reexamine the completeness of our previous WR survey, finished almost a decade prior. Our improved imaging data and spectroscopic follow-up confirmed 19 new WRs across three small fields in M31. These newly discovered WRs are generally fainter than the previously known sample due to slightly increased reddening as opposed to intrinsic faintness. From these findings, we estimate that there are another ∼60 WRs left to be discovered in M31; however, the overall ratio of WN-type (nitrogen-rich) to WC-type (carbon-rich) WRs remains unchanged with our latest additions to the M31 WR census. We are in the process of extending this pilot WR survey to include the rest of M31, and a more complete population will be detailed in our future work.
A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System
Authors: Sun Qinghui , Wang Sharon Xuesong , Mann Andrew W. , Tofflemire Benjamin M. , Kraus Adam L. , Gan Tianjun , Barber Madyson G.
Published: July 2023

Young planets (<1 Gyr) are helpful for studying the physical processes occurring at the early stage of planet evolution. TOI-251 b is a recently discovered sub-Neptune orbiting a young G dwarf, which has an imprecise age estimation of 40–320 Myr. We select TOI-251 sibling candidates based on kinematics and spatial proximity to TOI-251 and further use the color–magnitude diagram to refine the list and to compare to multiple open clusters. We report the stellar rotational period for 321 sibling candidates in a 50 pc radius around TOI-251 by analyzing their stellar light curves and find a color–rotational period sequence that lies in between the Group X (300 Myr) and Pleiades (120 Myr) members, suggesting an age ∼ 200 Myr. A quantitative age analysis using gyrochronology relations gives 204 ± 45 Myr, consistent with the average Li age of selected siblings (238 ± 38 Myr) and the Gaia variability age (193

−
54

102

Myr). The detection fraction of comoving candidates that have a short rotational period is 68.1%, much higher than the typical value in the field (14%–16% from Kepler). The overdensity of young stars and consistency in age of stellar siblings suggest a potential young association candidate in the Phoenix–Grus constellation. Though TOI-251 b has a radius larger than most of its field-age counterparts, we are uncertain whether TOI-251 is inflated, due to a lack of knowledge on the planet’s mass.
A Comprehensive Perturbative Formalism for Phase Mixing in Perturbed Disks. II. Phase Spirals in an Inhomogeneous Disk Galaxy with a Nonresponsive Dark Matter Halo
Authors: Banik Uddipan , van den Bosch Frank C. , Weinberg Martin D.
Published: July 2023

We develop a linear perturbative formalism to compute the response of an inhomogeneous stellar disk embedded in a nonresponsive dark matter (DM) halo to various perturbations like bars, spiral arms, and encounters with satellite galaxies. Without self-gravity to reinforce it, the response of a Fourier mode phase mixes away due to an intrinsic spread in the vertical (Ω
z
), radial (Ω
r
), and azimuthal (Ω
ϕ
) frequencies, triggering local phase-space spirals. The detailed galactic potential dictates the shape of phase spirals: phase mixing occurs more slowly and thus phase spirals are more loosely wound in the outer disk and in the presence of an ambient DM halo. Collisional diffusion due to scattering of stars by structures like giant molecular clouds causes superexponential damping of the phase spiral amplitude. The z–v

z
phase spiral is one-armed (two-armed) for vertically antisymmetric (symmetric) bending (breathing) modes. Only transient perturbations with timescales (τ
P) comparable to the vertical oscillation period (τ

z
∼ 1/Ω
z
) can trigger vertical phase spirals. Each (n, l, m) mode of the response to impulsive (τ
P < τ = 1/(nΩ
z
+ lΩ
r
+ mΩ
ϕ
)) perturbations is power-law (∼τ
P/τ) suppressed, but that to adiabatic (τ
P > τ) perturbations is exponentially weak (

∼
exp

−

τ

P

/

τ

α

) except for resonant (τ → ∞ ) modes. Slower (τ
P > τ

z
) perturbations, e.g., distant encounters with satellite galaxies, induce stronger bending modes. Sagittarius (Sgr) dominates the solar neighborhood response of the Milky Way (MW) disk to satellite encounters. Thus, if the Gaia phase spiral was triggered by a MW satellite, Sgr is the leading contender. However, the survival of the phase spiral against collisional damping necessitates an impact ∼0.6–0.7 Gyr ago.
Exploration on dynamics in a ratio-dependent predator-prey bioeconomic model with time delay and additional food supply
Authors: Yu Ting , Wang Qinglong , Zhai Shuqi
Published: July 2023

In this manuscript, a novel ratio-dependent predator-prey bioeconomic model with time delay and additional food supply is investigated. We first change the bioeconomic model into a normal version by virtue of the differential-algebraic system theory. The local steady-state of equilibria and Hopf bifurcation could be derived by varying time delay. Later, the formulas of the direction of Hopf bifurcation and the properties of the bifurcating periodic solutions are obtained by the normal form theory and the center manifold theorem. Moreover, employing the Pontryagin's maximum principle and considering the instantaneous annual discount rate, the optimal harvesting problem of the model without time delay is analyzed. Finally, four numeric examples are carried out to verify the rationality of our analytical findings. Our analytical results show that Hopf bifurcation occurs in this model when the value of bifurcation parameter, the time delay of the maturation time of prey, crosses a critical value.
Voice to the Silence. Materiality and Immateriality of the Female World and Childhood from the Coroplastic Perspective. International Webinar – Heritage Science on Air. Istituto di Scienze del Patrimonio Culturale (ISPC), Consiglio Nazionale delle Ricerche (IT), 21-22 settembre 2022.
Authors: Castiglione Marianna , Oggiano Ida
Published: July 2023

Dal 21 al 22 settembre 2022 si è tenuto il Webinar Voice to the Silence. Materiality and Immateriality of the Female World and Childhood from the Coroplastic Perspective, organizzato da Marianna Castiglione e Ida Oggiano, dell’Istituto di Scienze del Patrimonio Culturale (ISPC) del Consiglio Nazionale delle Ricerche, nell’ambito del Progetto di Rilevante Interesse Nazionale (PRIN 2017) “People of the Middle Sea. Innovazione e integrazione nel Mediterraneo antico (1600-500 a.C.)”, finanziato dal Ministero dell’Istruzione dell’Università e della Ricerca e coordinato dalla Sapienza Università di Roma. L’incontro ha previsto la partecipazione di tredici relatrici, specialiste di coroplastica, provenienti da sei Paesi differenti e affiliate a dieci Istituzioni.L’obiettivo del Webinar è stato quello di indagare diversi aspetti connessi al mondo femminile e dell’infanzia, attraverso l’analisi delle statuette di terracotta rinvenute in vari contesti del Mediterraneo e dell’Oriente.
Terracottas in Motion: A Three-Day ZOOM Colloquium
Authors: Muratov Maya , Uhlenbrock Jaimee
Published: July 2023

A three-day exploration of the theme of terracottas in motion was organized as a ZOOM colloquium by Maya Muratov and Jaimee Uhlenbrock under the auspices of The Association for Coroplastic Studies.
Pinggiran Selatan Kota Banten: Investigasi Arkeologi Situs Lawang Abang
Authors: Fadillah Mohammad Ali
Published: July 2023

The growth of international trade in the sea lanes of Southeast Asia affects Banten’s progress in the economic and social fields. This research focuses on socio-religious aspects in the southern suburbs of Banten which have not been widely studied during the research season two decades ago. This research was conducted to explore the archaeological remains that still exist in the area. Archaeological investigations at the Lawang Abang site, near Kenari village on the southern outskirts of Banten city, have uncovered the brick and coral structures and the burial complex marked with Acehnese tombstones. With archaeological and historical approaches, surface data show the remains of religious monuments that are estimated from the second half of the 17th century to the beginning of the 19th century.
Images de Sindanglaya et ses environs au XIXe siècle
Authors: Perret Daniel
Published: July 2023

L’artiste-peintre Marius Perret, qui a fait l’objet d’une contribution dans le précédent numéro de cette revue, nous a laissé plusieurs aquarelles de Sindanglaya et de ses environs. Sa contribution artistique est l’occasion de revenir sur la place particulière qu’occupe cette région de l’ouest de Java dans les récits de voyages et l’histoire iconographique de l’Archipel au XIXe siècle. Les témoignages de cette époque sont principalement alimentés par trois thèmes : un environnement unique, le relais sur la Grande Route de Poste, l’hôtel et maison de repos.
Customary Village (Desa Adat) and Inter-Ethnic Fragmentations in Seram Island, Maluku
Authors: Drestanta Eduardo Erlangga
Published: July 2023

This article introduces the socio-spatial implications of the recent transformation of inter-ethnic relations in Seram Island, Maluku. These transformations follow the implementation of the current regional autonomy policies in Indonesia, specifically on Customary Village (Desa Adat) Law No. 6 of 2014, which provides legal support for re-strengthening the traditional political forms at the village level or commonly known as negeri adat in the context of Maluku. The author highlights the consequences of this law on the change of governmental structural status from the uniform village model of desa, which was held previously in Soeharto’s New Order era, to negeri adat. This law provided a chance for minority groups generally termed by the surrounding population as “primitive” or “backward” to gradually emerge as political actors. Yet, this revival of adat has also generated a rivalry among villages on obtaining the “adat” label. It resulted in renewed identity claims and encouraged villagers to demand an increased village fragmentation (pemekaran desa) in order to gain independent financial resource from the government as well as to reinforce their autonomy in managing their traditional territory. Given these contesting claims, the challenges around the discourse of adat and the definition of adat itself remain unclear and need to be discussed. In Indonesia, especially in the context of Maluku society, adat is still considered as a natural state that is widely prevalent within the society’s daily life, such as social hierarchies and institutions as well as land transmission processes. On the other hand, this article attempts to show how adat also promotes areas of intervention in political contests and, thus, will concentrate on the processes of administrative configuration and on the power games between village societies. Examined through ethnographic method and participatory mapping, the focal point of interest is a sub-village (dusun) named Masihulan, a minority hinterland community of animists in North Seram, the so-called Alifuru. The author analyses how the application of desa adat law has provided this community the opportunity to split from its previous principal village, called Sawai, in order to become an independent village. Besides the economic oriented objective, divergent identity claims exacerbate local tensions and may provoke disintegration between social groups.
Creating a Different Kind of Learning Management System
Authors: Cope Bill , Kalantzis Mary
Published: July 2023

It is in the nature of pedagogy as a social activity to bring the outside world in, and not just some aspects of the outside world but every conceivable aspect—atoms, poems, mountains, revolutions, laws, kidneys. This is how everything in the world becomes learnable within the formalized institutional frame of education —by exophoric reference. If the architecture of meaning of the classroom is like a clause where the given/subject is addressed by the new/predicate, then the given/subject is the taken-for-granted existing knowledge of the student, and the new/predicate is whatever the class happens to be about—and that could be anything at all.
A Smart Learning Environment for a Blended Experience
Authors: Montebello Matthew
Published: July 2023

Online learning witnessed a shift in the attention of educators and e-learning specialists from transfer of knowledge-to-knowledge building and management, seeking to enhance innovative approaches while redefining better processes of learning. This is the case with this smart virtual learning environment (VLE), called Scholar. The authors have taken full advantage of new e-learning affordances to pedagogically design and develop it based on a reflexive ideology whereby complex reasoning skills such as critical and creative thinking form part of the process. Additionally, computer science collaborators employed available learning analytics and data mining techniques to automate critical thinking assessment through topic modelling, as well as semantically analyzing text to assess peer reviews. The purpose of this chapter is to report on the work done to extend both these lines of research and to document results from an empirical study in the form of in-class experiences in an attempt to address student needs in the next stage of online learning.
Creating Communities of Learners
Authors: Abrantes da Silva Rodrigo , Whiting Jen Story
Published: July 2023

The development of the digital environment and the global network has created opportunities for learning that we are just beginning to explore. Two key features of this recent development are collaborative intelligence and ubiquitous learning. That way this chapter sets out to explore two situated practices with the common ground scholar. The authors begin by telling how this cybersocial learning environment has changed the way we see and understand education, our students, and how this changes our teaching identity. They go on to recover some historical background of our educational systems and then situate the ways they are implementing CGScholar. A consequence of this two autoetnography perspective is to generate insights and reflections on possibilities of use of this particular digital technology for education.
The Use of the Open-Loop Onset Point (OLOP) to Predict Rotorcraft Pilot-Induced Oscillations
Authors:   German Aerospace Center (DLR), Jones Mike
Published: July 2023

The Open-Loop Onset Point(OLOP) criterion has, for many years, been successfully used as a method to predict quasi-non-linear pilot-induced oscillations (PIOs) for fixed-wing aircraft. Only limited research has been conducted using the criterion for prediction of PIOs occurring in rotorcraft. These efforts have shown OLOP to be too conservative for this application. This paper details a study to extend the application of OLOP to rotorcraft, using the combination of control inputs appropriate for the task and a suitable pilot model. Results are compared between pilot subjective opinion and OLOP predictions, from tests performed in a ground-based simulation facility. Using ‘task specific’ application of OLOP, results obtained in the investigation are encouraging. From results obtained, a modified boundary is presented.
Vibration and Acoustic Emission Characteristics of a Gearbox Following Loss of Lubrication
Authors:   US Army Research Lab, Dykas Brian ,   Naval Air Systems Command, Hines Jason , Berkebile Stephen
Published: July 2023

In recent years, the rotorcraft community has considered the loss of lubrication within transmissions as a critical issue requiring additional understanding of failure progression and technology improvements allowing future helicopters to be more tolerant to lubricant starvation and loss. With increases in flight range and duration, current loss of lubrication operational requirement specifications for rotorcraft will be inadequate (Ref. 1). Years of internal research on the effect of lubricants, materials, and treatments on gear performance under oil loss culminated in run-to-failure experiments in an intermediate gearbox of a military-relevant medium-lift helicopter (Ref. 2). A baseline experiment and an experiment with a gearbox incorporating promising technology improvements were run with a suite of instrumentation to measure the response during the transient failure. Both conventional instrumentation and laboratory-based or advanced sensors were used in the experiments to determine how physical response of the gearbox evolved following loss of lubrication. This paper specifically compares the vibro-acoustic response of the gearboxes in a baseline lubricated state to the response when the oil supply has been removed. Acoustic emission sensors registered high response to the loss-of-lubrication condition and show clear promise for diagnostic sensing of mechanical systems in future vertical lift aircraft.
Diagnostic Features from Aircraft Propulsion Bearings in Accelerated Aging Experiments
Authors:   US Army CCDC ARL, Dykas Brian ,   Rochester Institute of Technology, Nenadic Nenad , Hood Adrian , Zhu Edward
Published: July 2023

Over the course of a long-duration aging of helicopter drivetrain bearings to examine the consumption of grease life, both vibration and acoustic emission sensing was used to monitor the bearing response as the grease life was consumed through this aging. Acoustic emission is evaluated against vibration in terms of signal trends over the course of the experiment. Common signal metrics are calculated to yield condition indicators, and machine learning techniques are applied to the vibration and acoustic emission data. For the 862 hour duration test run equivalent to over 6700 hours on wing, features of these signals trend with increased degree of aging. Autoencoders were used to enrich existing set of traditional condition indicators and principle component analysis was effectively used for feature fusion. This measured trending shows promise for future onboard Health and Usage Monitoring Systems which may adopt new sensing and data analysis modalities to trend the condition of mechanical systems.
Catastrophe at Farnborough: How the Death of John W. C. "Pee Wee" Judge on 11 September 1970 at the SBAC Air Show in a Wallis WA-117 Autogyro Changed British Popular Rotorcraft History
Authors:   Hofstra University, Bruce Dr.
Published: July 2023

At 1414 hours on 11 September 1970 John W. C. "Pee Wee" Judge lost control of a Wallis WA-117 autogyro and plunged to his death in front of the viewing stand at the Society of British Aerospace Companies (SBAC) air show at Farnborough. From loss of control until the fatal impact was less than 7 seconds, and as the aircraft was the center of attention (including HRH Queen Elizabeth II), it was photographed from different angles by high quality cine film cameras which enabled extensive analysis. The official accident report would not be issued for 3 and half years, essentially confirming Wing Commander Ken Wallis' own conclusions based on a frame-by-frame viewing of the films - the end result was that Wallis, the most famous autogyro pilot and popularizer since his stellar performance with his WA-116 autogyro "Little Nellie" in the 1967 James Bond film You Only Live Twice, exited from public life and pursued "the autogyro as a working aircraft" for the next 42 years. Although he would later assume the ceremonial role as "Patron of the British Rotorcraft Society" and of The Norfolk and Suffolk Aviation Museum, he steadfastly refused to facilitate construction of his autogyros by amateur builders. (Two unsuccessful models, the Wombat and the Dingbat, would eventually be built by others, the result of what Wallis would label "eyeball engineering"). His sui generis status as a 'developer' had allowed him to develop the most advanced autogyro models (and begin dominating world records for the next three decades), but the British popular rotorcraft movement would not see any benefits, and never recover from the impact in public perception and governmental skepticism as to the safety of the small autorotational aircraft.