bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Big Five Personality dan Self Efficacy terhadap Prokrastinasi Akademik Pada Mahasiswa Magister Profesi Psikologi di Jabodetabek
Authors: Gardyanie Hermawan, Liza , Sovitriana Rilla , Maryatmi Anastasia Sri , Yunanto Kuncono Teguh
Published: October 2024

Proses pendidikan untuk menjadi Psikolog melibatkan berbagai mata kuliah magister dankeprofesian yang harus diselesaikan. Mahasiswa sering menghadapi kendala seperti batas waktu,praktik lapangan bersamaan, dan tekanan untuk segera lulus. antangan ini membuat merekakesulitan menyesuaikan diri dengan lingkungan praktik yang tidak terduga, yang bisa memicu stresakademik, penurunan motivasi, dan prokrastinasi. Berdasarkan survei, beban tugas perkuliahandipengaruhi oleh rendahnya keyakinan pada diri sendiri dan konsistensi, serta adanya kaitan antaratrait kepribadian dan prokrastinasi akademik di kalangan mahasiswa Magister Profesi Psikologi diJabodetabek. Hasil penelitian menunjukkan ada pengaruh signifikan pada trait extraversion,conscientiousness, negative emotionality terhadap prokrastinasi akademik dengan nilai P= 0.001<0,05. Sedangkan pada trait agreeableness dan open mindedness tidak berpengaruh terhadapprokrastinasi akademik. Namun, apabila dianalisa secara bersama-sama maka big five personalityberpengaruh secara signifikan. Selain itu, didapatkan juga self efficacy berpengaruh terhadapprokrastinasi akademik dengan nilai nilai P= 0.001<0, 05.
Hubungan Efikasi Diri dan Dukungan Sosial Keluarga dengan Kematangan Karir Siswa Kelas XI di SMA Future Gate
Authors: Faiza Aulia , Yulianita Yulianita
Published: October 2024

Penelitian ini merupakan penelitian kuantitatif yang bertujuan untuk menguji hubungan efikasi diridan dukungan sosial keluarga dengan kematangan karir pada siswa kelas XI di SMA Future Gate.Populasi dalam penelitian ini adalah 122 siswa kelas XI dan sampel pada penelitian ini berjumlah92 sampel berdasarkan tabel morgan, dengan metode pengambilan sampel menggunakan tekniksimple random sampling. Teknik analisis data dengan bivariate correlation dan multivariatecorrelation menggunakan SPSS versi 25.0 for windows. Hasil penelitian menunjukan bahwaterdapat hubungan positif yang signifikan antara efikasi diri dengan kematangan karir (r = 0,716) dimana efikasi diri menyumbang sebesar 51,3%, kemudian terdapat hubungan positif yang signifikanantara dukungan sosial keluarga dengan kematangan karir (r = 0,613) di mana dukungan sosialkeluarga menyumbang sebesar 6,7%, serta terdapat hubungan yang signifikan antara efikasi diri dandukungan sosial keluarga dengan kematangan karir (R=0,761) di mana efikasi diri dan dukungansosial keluarga memberikan kontribusi bersama-sama sebesar 58%. Hal ini menunjukkan bahwaterdapat hubungan efikasi diri dan dukungan sosial keluarga dengan kematangan karir pada siswakelas XI SMA Future Gate.
PENGARUH FAKTOR KEAMANAN TERHADAP KEPUTUSAN PEMBELIAN DI E-COMMERCE (Survey Pada Followers Instagram @tiket.com)
Authors: Setiyawati Marina Ery
Published: October 2024

E-commerce merupakan salah satu penjualan digital yang sering digunakan sampai saat ini,dimana dengan pembelian melalui e-commerce dapat mempermudah konsumen melakukantransaksi, namun ketakutan konsumen akan hal-hal yang tidak diinginkan. Faktor keamananmerupakan salah satu faktor konsumen untuk melakukan pengambilan keputusan untuk membeli.Penelitian ini bertujuan mengetahui seberapa besar pengaruh faktor kemana terhadap keputusanpembelian di e-commerce tiket.com. Dalam penelitian ini menggunakan variabel faktor keamanandan variabel faktor keputusan pembelian. Dengan menggunakan paradigma positivisme,pendekatan kuantitatif, sifat penelitian eksplanatif dan metode penelitian survey. Populasi dalampenelitian ini adalah followers akun Instagram @tiket.com, dengan menggunakan rumus slovindiperoleh 100 sampel penelitian. Hasil yang diperoleh untuk uji korelasi sebesar 0.683, merupakanhubungan Cukup Kuat. Uji hipotesis diperoleh nilai variabel X Faktor keamanan didapt nilaisebesar 3.636 (T Hitung) > 1.985 (T Tabel), disimpulkan terdapat pengaruhnya bersignifikanparsial antara variabel Faktor keamanan kepada variabel Keputusan pembelian.
Pengaruh Hamidah Rachmayanti Sebagai Co-Branding Produk Lozy Hijab Terhadap Minat Beli Konsumen
Authors: Ayu CahyanI Regita , Yunarti Susi
Published: October 2024

Perkembangan yang pesat pada industri fashion muslim di Indonesia mengharuskan pebisnis untukterus berinovasi dalam usaha bisnisnya dengan mengikuti perkembangan tren. Penelitian inibertujuan untuk mengetahui adakah pengaruuh dan seberapa besar pengaruh Hamidah Rachmayantisebagai co-branding produk Lozy Hijab terhadap minat beli konsumen. Teori yang digunakan adalahteori co-branding dan hierarki efek. Penelitian ini menggunakan pendekatan kuantitatif eksplanatifdengan metode survei menggunakan kuesioner yang disebar kepada 103 responden yang merupakanfollowers akun Instagram @lozyhijab. Hasil menunjukan bahwa co-branding memiliki dampaksignifikan terhadap minat beli dengan kontribusi sebesar 88,7%, dimensi yang terkuat dari cobrandingadalah respon konsumen yang positif, dan dimensi terkuat dariminat beli adalah keyakinan. Sehingga
penelitian ini dapat disimpulkan bahwa Hamidah Rachmayanti sebagai co-brandingberpengaruh terhadap minat beli konsumen pada produk Lozy Hijab.
Hubungan Kecerdasan Emosional dan Growth Mindset dengan Self Efficacy pada Siswa Kelas XI SMAN 4 Jakarta
Authors: Hilal Alkatiri Suhailah , Susilarini Tanti
Published: October 2024

Penelitian ini bertujuan untuk mengetahuihubungan antara kecerdasan emosional dan growth mindset denganself efficacy pada siswa kelas XI SMAN 4 Jakarta. Teknik pengambilan sampel yang digunakan adalahproposional random sampling, dengan jumlah sampel sebanyak 140 siswa dari populasi 210 siswa.Hasil analisa menggungakan metode bivariate correlation menunjukkan bahwa terdapat hubungan positifyang signifikan antara kecerdasan emosional dengan self efficacy (r = 0,330) hal ini menunjukkan bahwasemakin baik kecerdasan emosional, maka akan diikuti oleh semakin baiknya self efficacy, selanjutnyahubungan positif yang signifikan antara growth mindset dengan self efficacy (r = 0,274) hal ini menunjukkanbahwa semakin baik growth mindset, maka akan diikuti oleh semakin baiknya self efficacy. Selanjutnya, hasil ujimultivariatecolleration pada hubungan antara kecerdasan emosional dan growth mindset dengan self efficacymenghasilkan koefisien r = 0,363 dan r2= 0,132, p = < 0,001. Kecerdasan emosional memberikan kontribusisebesar 10,9% dan growth mindset memberikan kontribusi sebesar 7,5% terhadap self efficacy. Hal inimenunjukkan adanya hubungan antara kecerdasan emosional dan growth mindset dengan self efficacy padasiswa kelas XI SMAN 4 Jakarta.
Perancangan Aplikasi Sistem Absensi Guru Dan Karyawan Berbasis Web Sekolah Menengah Kejuruan
Authors: Putra Fraska Drahma , Anwar Nizirwan
Published: October 2024

The development of information technology is quite extensive and global and has had a changing impact on all aspects ofhuman life. In the field of education, information technology is very necessary in order to support the performance ofeducation so that it can be useful in building an intelligent and competitive generation, one of which is at Global PersadaVocational School. Based on observations, Global Persada Vocational School does not yet have a teacher and employeeattendance system for processing teacher absence data. The obstacles that are often encountered in manual processing ofabsentee data are that it is very slow, ineffective, and makes it difficult for school principals to manage and check data onteachers who are present, and is even prone to losing absenteeism recap data. The aim of this research is to design andbuild a Web-based attendance system for processing teacher and employee attendance data for Global PersadaVocational School to make it easier to process teacher and employee attendance data. In building the teacher andemployee attendance system, the author used the SDLC method with the Waterfall model in designing the system andproduced a system with a simple interface that can help present accurate and relevant value data processing information.
Penerapan Model Rational Unified Process (RUP) Dalam Membangun Aplikasi Promosi dan Penjualan Berbasis Web (Studi Kasus: Toko Mie Ayam “Neng Kene Kiyeh”)
Authors: Chandra Yudi Irawan , Irawati Diyah Ruri , Riastuti Marti
Published: October 2024

This research discusses the application of the Rational Unified Process (RUP) Model in thedevelopment of web-based promotion and sales applications, with a case study at the Chicken Noodle Shop“Neng Kene Kiyeh”. The purpose of this research is to design and implement applications that can increasethe efficiency of promotion and sales of chicken noodle products through digital platforms. The RUPmethod was chosen because of its iterative approach and focus on user needs, allowing for more structuredand controlled software development. The RUP model consists of four main phases: inception, elaboration,construction, and transition. In the inception phase, a needs identification and feasibility study are conductedto ensure that the application to be developed matches the business needs of the store. The elaboration phaseinvolves more in-depth analysis and system design, including use case modeling, risk analysis, andapplication architecture design. In the construction phase, application development is carried out with aniterative approach, allowing for improvements and adjustments based on user feedback. The transitionphase involves application testing and end-user training, as well as full system implementation. The result ofthis research is a web application that has main features such as product catalog, online ordering system, inventory management, and integrated digital promotion. The implementation of this application is expectedto increase the visibility of Chicken Noodle Shop “Neng Kene Kiyeh” in the digital market, simplify theordering process for customers, and increase sales. The trial shows that this application can function asexpected, and provides significant benefits in the store's operational processes. The conclusion of thisresearch is that the application of the RUP model can be an effective approach in building web-basedpromotional and sales applications, with a focus on meeting user needs and improving businessperformance.
Rancangan Aplikasi Kasir Toko Kelontong Berbasis Website Menggunakan Metode Waterfall
Authors: Irmayanti Ade , Ruspita Desi
Published: October 2024

Digitalization in the business world has become an urgent need to enhance efficiency andproductivity, particularly for grocery stores that still rely on manual methods for managingtransactions and inventory. Dependence on manual processes often leads to various issues, such asinaccurate record-keeping, difficulties in tracking inventory, and suboptimal customer service. Toaddress these challenges, this study develops a web-based cashier application designed to automatetransactions, inventory management, and sales reporting. The application is expected to facilitatestore owners in managing daily operations while improving data accuracy and customersatisfaction. The development of the application follows the Waterfall method, a structured andlinear software development approach. This method involves stages of requirements analysis,system design, implementation, testing, and maintenance. The outcome of this study is a webbasedcashier application capable of addressing the challenges faced by grocery stores, withfeatures that support operational efficiency and flexibility in monitoring business activities. Thisapplication also offers long-term benefits in enhancing the competitiveness of grocery stores in thedigital era.
Rancang Bangun Sistem Informasi Sekolah Berbasis Web Untuk Komunikasi Antara Guru Dan Orang Tua Murid Di SDN Harapan Jaya II Bekasi Menggunakan Metode String Matching
Authors: Chuzaimi Ahmad , Basry Asril
Published: October 2024

In the current era of rapid scientific and technological progress, information plays animportant role in driving progress in various fields. Information technology and computersplay an important role in facilitating human work and in solving various problems. Thisresearch aims to design and build a web-based school information system that facilitatescommunication between teachers and parents at SDN Harapan Jaya II Bekasi. This systemwas developed using the String Matching method to increase efficiency in searching anddelivering information. With this system, it is hoped that communication between teachersand parents will be more effective and structured, and can support the overall teaching andlearning process. The research results show that the system developed is able to meet thecommunication and information needs of the school well.
Perancangan Aplikasi Pencatatan Dan Monitoring Performa Transaksi Penjualan Cabang Waralaba Teh Manis Solo Berbasis Website (Studi Kasus : Teh Manis Solo Siska)
Authors: Nugroho Kevin Teguh , Malabay Malabay
Published: October 2024

Teh Manis Solo is a franchise engaged in the beverage sales sector. Siska Andriyani, as the franchisee, purchaseda partnership package and owns three branches in three different locations. The first branch is located at Jl. PuloHarapan Indah, West Jakarta. The second branch is located at Jl. M Toha, Tangerang City, and the third branchis located at Jl. Prabu Siliwangi, Tangerang City. In running her business, Teh Manis Solo Siska faces severalchallenges, such as recording transactions from the three branches still using a manual system, sales transactionsnot being recorded in detail since the records are based on how many thermos were sold today, and each branch'stransaction data must be monitored through direct inspections. Consequently, the owner finds it difficult tomonitor and know the types of beverages sold at each branch and control the business processes at each TehManis Solo Siska branch. To address these issues, a web-based application for Sales Transaction Recording andFranchise Branch Transaction Performance Monitoring of Teh Manis Solo is being developed. Theprogramming language used for designing and developing the application is PHP (Hypertext Preprocessor)using the CodeIgniter framework, and data processing is done using MySQL. The development method used isthe Waterfall model. The data collection process that will be implemented includes direct observation,interviews, and literature study. The hope is that this application will solve the problems faced by the businessowner in the process of recording sales transactions, expenditures, and monitoring as well as controlling businessprocesses at each branch.
Rancang Bangun Sistem Pendeteksi Kebakaran Hutan Menggunakan Drone Berbasis Computer Vision
Authors: Usman Farizal Justian , Suwarno Muhammad Anno
Published: October 2024

The danger of forest and land fires in Indonesia is a serious threat that continues to recurevery year. According to U.S. data Fire Service, there are more than 700 forest fires everyyear burning more than 7 million hectares of land. These fires not only damage ecosystems,but also cause the loss of important biodiversity. Many of Indonesia's endemic flora andfauna have fallen victim, increasing the risk of extinction. The use of UAVs can also changedisaster management. This technology can be integrated with early warning systems basedon analytical data and artificial intelligence, increasing the accuracy of fire predictions andmore proactive responses. Thus, the application of this technology is not just a temporarysolution, but a long-term strategic step to maintain environmental sustainability andcommunity welfare. Technological solutions such as UAVs and cooperation betweenvarious parties are needed to overcome this challenge effectively. The aim of this researchis to create a computer vision-based system that uses deep learning algorithms, especiallyYou Only Look Once (YOLO), to detect forest fires quickly and accurately. In mitigating forest fire disasters, early detection of hotspots is an important step to prevent fires fromspreading to other areas and reduce the damage caused by fires to humans and theenvironment. To achieve the objectives of this study, several actions were taken. First,forest fire image data is collected and processed for use in training the YOLO model. Next,the model is trained using a dataset that covers various forest fire conditions, such as fireintensity, time of day, and weather conditions, to ensure that the model can find firehotspots in various conditions.
Rancang Bangun Aplikasi Untuk Prediksi Harga Bitcoin Menggunakan Algoritma Long Short-Term Memory
Authors: Sidiq Muhammad Anwar , Nurzaman Fahrul
Published: October 2024

Bitcoin, as the first cryptocurrency launched in 2009, has experienced rapid growth and significant volatility.The high price fluctuations of Bitcoin have attracted the attention of investors and traders worldwide.Predicting Bitcoin prices poses a challenge due to its inherent complexity and volatility. Various methodsare employed to predict Bitcoin prices, including fundamental analysis, technical analysis, and deeplearning techniques. This study explores the use of neural networks, specifically Long Short-Term Memory(LSTM), as a tool for predicting Bitcoin prices. Long Short-Term Memory is a type of recurrent neuralnetwork (RNN) designed to address the vanishing and exploding gradient problems present in traditionalRNNs and can learn long-term dependencies in data. The LSTM model used in this research comprises 50neurons, 400 epochs, a batch size of 32, and utilizes Adam optimization. Model evaluation indicates thatLSTM performs well, with a Mean Square Error (MSE) of 2688. Additionally, the model achieves a MeanAbsolute Percentage Error (MAPE) accuracy of 97.77%. Based on these predictions, Bitcoin's price isexpected to decrease over the next month, with an estimated price of approximately 66,191.00 on June 15,2024, and around 64,271.64 on July 15, 2024
O papel do farmacêutico clínico na unidade de terapia intensiva: uma revisão integrativa da literatura
Authors: Braga Danielle do Nascimento , Pinto Thiago Serrão
Published: October 2024

Introdução: O farmacêutico na UTI tem um papel essencial ao identificar e corrigir problemas nas prescrições, como interações medicamentosas e doses inadequadas, além de atuar em educação em saúde e controle de medicamentos. Objetivo: Este estudo busca compreender suas atribuições, desafios e impacto na segurança e eficácia na UTI por meio de uma revisão integrativa da literatura (RIL). Método: Esta RIL seguiu os seis passos necessários para esse tipo de metodologia. Os dados foram coletados nas bases SciELO, MEDLINE e LILACS. A seleção dos artigos começou com a identificação dos descritores em Ciências da Saúde (DeCS), seguida da elaboração de uma estratégia de busca utilizando a metodologia PICo. As buscas foram feitas combinando operadores booleanos AND e OR. Resultados: Foram encontrados 673 estudos, que foram exportados para o software Rayyan, onde 26 artigos duplicados foram excluídos. Em seguida, foi realizada a seleção dos estudos no período de 2020 a 2024, com triagem por título (74), resumo (47) e texto completo (24), resultando em 9 artigos selecionados e sintetizados. A triagem seguiu as diretrizes PRISMA, apresentada em um fluxograma. Conclusões: Destacam o papel crucial do farmacêutico clínico na UTI, reforçando sua importância na equipe multiprofissional e revelando desafios, como dificuldades de comunicação e integração com outros profissionais de saúde, especialmente com médicos.
STRATEGI EFEKTIF INTERNALISASI NILAI KRISTEN DALAM PEMBENTUKAN KARAKTER DAN SPIRITUALITAS REMAJA KRISTEN
Authors: Lahagu Ardianto , Widjaja Fransiskus Irwan
Published: October 2024

This study aims to identify effective strategies for internalizing Christian values in shaping the character and spirituality of Christian youth. This research explores theological literature relevant to Christian spiritual formation strategies using a descriptive qualitative approach and literature analysis. The findings reveal that using Bible stories, reflective discussions, social service, and the active involvement of pastors, families, and church communities are vital components in the internalization process of Christian values. A holistic approach integrating Biblical teaching with practical experience is highly effective in cultivating Christian youth character deeply rooted in solid spirituality. The originality of this research lies in the synergy between spiritual formation and the role of church communities in shaping youth spirituality, a topic that has rarely been explored in depth in contemporary theological literature.
MENEMUKAN IMAN DALAM KETIDAKPASTIAN: REFLEKSI TEOLOGIS BERDASARKAN KITAB HABAKUK
Authors: Halawa Iman Kristina , Purwonugroho Daniel Pesah , Wowo Martha Bela , Prasetyo Yosafat Gratia
Published: October 2024

This paper is organized to find faith in uncertainty through theological reflection based on the book of Habakkuk. Habakkuk is a prophet of God in the Old Testament who experienced a difficult time amid King Jehoiakim's reign. The difficulties of life and injustice that occurred during the time of King Jehoiakim made the prophet Habakkuk constantly pray and put his faith in God. This steadfastness of faith needs to be emulated by believers. The modern age in which believers live often brings various challenges, such as the relativism of absolute truth and identity crisis. As a believer living in modern times, I believe that imitating Habakkuk can be done to achieve faith resilience. By having faith resilience as a result of imitating Habakkuk, believers can get through difficult times through their faith. Believers' faith will be trained amid life's uncertainties. Through descriptive qualitative research methods, the author tries to narrate the discovery of faith amid uncertain conditions through theological reflection based on the book of Habakkuk. The author states that the theological reflection of the book of Habakkuk brings believers to have faith that even amid uncertainty, God still answers prayer.
A Comprehensive Review of the Evaluation of in Situ Gels
Authors: Singh Somveer , Gupta Ayush , Adil Tahseen Mohd.
Published: October 2024

In situ gels are now among the most widely used and widely available systems. These systems minimize drug administration frequency because of their special sol-to-gel transition properties, increasing patient comfort. Other benefits of these systems include easy production, improved adherence, and ease of use. 'Sol-gel' produces a colloidal suspension or solution by hydrolyzing the precursor and then polymerizing it through condensation. These in situ gelling techniques gel at the accomplishment site because they can be administered as solutions. Recently, several researchers developed liposomes, microspheres, nanoemulsions, nanospheres, and other in situ gelling systems. One of the greatest innovative drug delivery methods to date is the "in situ gel" system, which promotes better patient comfort and compliance as well as a prolonged and regulated release of the medication. With in situ gel formation, a variety of natural and synthetic polymers may find application in oral, ophthalmic, transdermal, buccal, intraperitoneal, parenteral, injectable, rectal, and vaginal routes. Research on the in-situ gel system has a lot of potential to offer cutting-edge methods for medication delivery systems.
Deep Learning for Sustainable E-Waste Management: Leveraging Transfer Learning for Classification
Authors: Kukade Jyoti , Kanungo Ansh , Tamrakar Akshat
Published: October 2024

The rapid rise of electronic waste (commonly referred to as "e-waste") has become a world's growing challenge which should be managed by creative approaches. The number of e-waste produced is estimated to be 53.6 million metric tons in 2019. From this we can see that the seriousness of the issue direly calls upon taking the measures to prevent the environmental and public health risks associated with this expanding crisis [1]. Since a lot of the e-waste may contain hazardous materials such as mercury, lead and cadmium, which can impact the health and the environment if not treated properly, the mismanagement of it increases the problem [2]. In the case of e-waste, there is wide assortment of the electronic devices and components hence, it becomes difficult to classify them into their product categories properly. Sorting processes can't keep up with the pace of production waste as a result of being tedious, error-prone, and slow. This research employs deep learning approaches to segregate E-waste items using images for automated category. Utilizing contemporary models like VGG16, DenseNet121, InceptionV3, MobileNetV3, and ResNet50, the research designs classification systems that have these great attributes. Dataset building (training and assessment) become easy when an extensive dataset of 3000 images from 10 different types of equipment is developed. This research study helps to offer useful implications for managing current methods of electronic waste disposal and developing sustainable circular economies with quantitative analyzing of model performance factors that include accuracy, precision, F1- score, mean squared error (MSE), and mean absolute error (MAE).
AN INTERESTING OUTCOME IN A PATIENT PRESENTING WITH AGITATION: NEUROBRUCELLOSIS
Authors: Yılmaz Gözde , Özer Ayşegül Eylem , Aytekin Rukiye , Yıldırım Haticenur , Baykan Necmi
Published: October 2024

Brucellosis is one of the most common zoonotic diseases worldwide. Neurobrucellosis develops within approximately 12 months after the diagnosis of brucellosis. Since the classical triad of meningitis (fever, nuchal rigidity, confusion) is rare in cases of meningitis due to brucellosis, brucellosis should be considered in the differential diagnosis of patients with unexplained neurological findings in endemic areas. In our case, a 31-year-old male patient with no history of chronic disease in his medical history was admitted to the emergency department with agitation, confusion, meaningless movements, unsteadiness in walking and blurred vision which started on the same day. In his anamnesis, it was learned that he had been treated for brucella 8 months ago in an external centre, but he did not continue his treatment regularly and did not attend the follow-up visits. LP revealed microprotein 255 mg/dL and albumin 114 mg/dL. CSF brucella agglutination was positive at a titre of 1/40. The patient was transferred to the intensive care unit with a diagnosis of neurobrucellosis. In this case report, we aimed to ensure that neurobrucellosis should be considered as a differential diagnosis in patients presenting with atypical neurological and psychiatric symptoms, especially in regions where animal husbandry is practised.
Revealing Potential Initial Mass Function Variations with Metallicity: JWST Observations of Young Open Clusters in a Low-metallicity Environment
Authors: Yasui Chikako , Izumi Natsuko , Saito Masao , Lau Ryan M. , Kobayashi Naoto , Ressler Michael E.
Published: October 2024

We present the substellar mass function of star-forming clusters (≃0.1 Myr old) in a low-metallicity environment (≃−0.7 dex). We performed deep JWST/NIRCam and MIRI imaging of two star-forming clusters in Digel Cloud 2, a star-forming region in the outer Galaxy (R

G
≳ 15 kpc). The very high sensitivity and spatial resolution of JWST enable us to resolve cluster members clearly down to a mass detection limit of 0.02 M
⊙, enabling the first detection of brown dwarfs in low-metallicity clusters. A total of 52 and 91 sources were extracted in mass-A

V
-limited samples in the two clusters, from which initial mass functions (IMFs) were derived by model-fitting the F200W band luminosity function, resulting in IMF peak masses (hereafter M

C
)

log

M

C

/

M

⊙

≃
−
1.5
±
0.5

for both clusters. Although the uncertainties are rather large, the obtained M

C
values are lower than those in any previous study (

log

M

C

/

M

⊙

∼
−
0.5

). Comparison with the local open clusters with similar ages to the target clusters (∼106–107 yr) suggests a metallicity dependence of M

C
, with lower M

C
at lower metallicities, while the comparison with globular clusters, with similarly low metallicities but considerably older (∼1010 yr), suggests that the target clusters have not yet experienced significant dynamical evolution and remain in their initial physical condition. The lower M

C
is also consistent with the theoretical expectation of the lower Jeans mass owing to the higher gas density under such low metallicity. The M

C
values derived from observations in such an environment would place significant constraints on the understanding of star formation.
Asteroseismology of the Nearby K Dwarf σ Draconis Using the Keck Planet Finder and TESS
Authors: Hon Marc , Huber Daniel , Li Yaguang , Metcalfe Travis S. , Bedding Timothy R. , Ong Joel , Chontos Ashley , Rubenzahl Ryan , Halverson Samuel , García Rafael A. , Kjeldsen Hans , Stello Dennis , Hey Daniel R. , Campante Tiago , Howard Andrew W. , Gibson Steven R. , Rider Kodi , Roy Arpita , Baker Ashley D. , Edelstein Jerry , Smith Chris , Fulton Benjamin J. , Walawender Josh , Brodheim Max , Brown Matt , Chan Dwight , Dai Fei , Deich William , Gottschalk Colby , Grillo Jason , Hale Dave , Hill Grant M. , Holden Bradford , Householder Aaron , Isaacson Howard , Ishikawa Yuzo , Jelinsky Sharon R. , Kassis Marc , Kaye Stephen , Laher Russ , Lanclos Kyle , Lee Chien-Hsiu , Lilley Scott , McCarney Ben , Miller Timothy N. , Payne Joel , Petigura Erik A. , Poppett Claire , Raffanti Michael , Rockosi Constance , Sanford Dale , Schwab Christian , Shaum Abby P. , Sirk Martin M. , Smith Roger , Thorne Jim , Valliant John , Vandenberg Adam , Wang Shin Ywan , Wishnow Edward , Wold Truman , Yeh Sherry , Baker Ashley , Basu Sarbani , Bedell Megan , Cegla Heather M. , Crossfield Ian , Dressing Courtney , Dumusque Xavier , Knutson Heather , Mawet Dimitri , O’Meara John , Stefánsson Guđmundur , Teske Johanna , Vasisht Gautam , Wang Sharon Xuesong , Weiss Lauren M. , Winn Joshua N. , Wright Jason T.
Published: October 2024

Asteroseismology of dwarf stars cooler than the Sun is very challenging owing to the low amplitudes and rapid timescales of oscillations. Here we present the asteroseismic detection of solar-like oscillations at 4-minute timescales (

ν
max

∼
4300

μHz) in the nearby K dwarf σ Draconis using extreme-precision Doppler velocity observations from the Keck Planet Finder and 20 s cadence photometry from NASA’s Transiting Exoplanet Survey Satellite. The star is the coolest dwarf star to date with both velocity and luminosity observations of solar-like oscillations, having amplitudes of 5.9 ± 0.8 cm s−1 and 0.8 ± 0.2 ppm, respectively. These measured values are in excellent agreement with established luminosity−velocity amplitude relations for oscillations and provide further evidence that mode amplitudes for stars with T
eff < 5500 K diminish in scale following an (L/M)1.5 relation. By modeling the star’s oscillation frequencies from photometric data, we measure an asteroseismic age of 4.5 ± 0.9 (ran) ± 1.2 (sys) Gyr. The observations demonstrate the capability of next-generation spectrographs and precise space-based photometry to extend observational asteroseismology to nearby cool dwarfs, which are benchmarks for stellar astrophysics and prime targets for directly imaging planets using future space-based telescopes.
Probing Cold-to-temperate Exoplanetary Atmospheres: The Role of Water Condensation on Surface Identification with JWST
Authors: Huang 黄 Ziyu 子钰 , Yu 余 Xinting 馨婷 , Tsai Shang-Min , Moses Julianne I. , Ohno Kazumasa , Krissansen-Totton Joshua , Zhang Xi , Fortney Jonathan J.
Published: October 2024

Understanding the surface temperature and interior structure of cold-to-temperate sub-Neptunes is critical for assessing their habitability, yet direct observations are challenging. In this study, we investigate the impact of water condensation on the atmospheric compositions of sub-Neptunes, focusing on the implications for James Webb Space Telescope (JWST) spectroscopic observations. By modeling the atmospheric photochemistry of two canonical sub-Neptunes, K2-18 b and LHS 1140 b, both with and without water condensation and with and without thick atmospheres, we demonstrate that water condensation can significantly affect the predicted atmospheric compositions. This effect is driven by oxygen depletion from the condensation of water vapor and primarily manifests as an increase in the C/O ratio within the photochemically active regions of the atmosphere. This change in composition particularly affects planets with thin H2-dominated atmospheres, leading to a transition in dominant nitrogen and carbon carriers from N2 and oxygen-rich species like CO/CO2 toward heavier hydrocarbons and nitriles. While our models do not fully account for the loss mechanisms of these higher-order species, such molecules can go on to form more refractory molecules or hazes. Planets with thin H2-rich atmospheres undergoing significant water condensation are thus likely to exhibit very hazy atmospheres. The relatively flat JWST spectra observed for LHS 1140 b could be consistent with such a scenario, suggesting a shallow surface with extensive water condensation or a high atmospheric C/O ratio. Conversely, the JWST observations of K2-18 b are better aligned with a volatile-rich mini-Neptune with a thick atmosphere.
pop-cosmos: Scaleable Inference of Galaxy Properties and Redshifts with a Data-driven Population Model
Authors: Thorp Stephen , Alsing Justin , Peiris Hiranya V. , Deger Sinan , Mortlock Daniel J. , Leistedt Boris , Leja Joel , Loureiro Arthur
Published: October 2024

We present an efficient Bayesian method for estimating individual photometric redshifts and galaxy properties under a pretrained population model (pop-cosmos) that was calibrated using purely photometric data. This model specifies a prior distribution over 16 stellar population synthesis (SPS) parameters using a score-based diffusion model, and includes a data model with detailed treatment of nebular emission. We use a GPU-accelerated affine-invariant ensemble sampler to achieve fast posterior sampling under this model for 292,300 individual galaxies in the COSMOS2020 catalog, leveraging a neural network emulator (Speculator) to speed up the SPS calculations. We apply both the pop-cosmos population model and a baseline prior inspired by Prospector-α, and compare these results to published COSMOS2020 redshift estimates from the widely used EAZY and LePhare codes. For the ∼12,000 galaxies with spectroscopic redshifts, we find that pop-cosmos yields redshift estimates that have minimal bias (∼10−4), high accuracy (σ
MAD = 7 × 10−3), and a low outlier rate (1.6%). We show that the pop-cosmos population model generalizes well to galaxies fainter than its r < 25 mag training set. The sample we have analyzed is ≳3× larger than has previously been possible via posterior sampling with a full SPS model, with average throughput of 15 GPU-sec per galaxy under the pop-cosmos prior, and 0.6 GPU-sec per galaxy under the Prospector prior. This paves the way for principled modeling of the huge catalogs expected from upcoming Stage IV galaxy surveys.
Pulling Back the Curtain on Shocks and Star Formation in NGC 1266 with Gemini-NIFS
Authors: Otter Justin Atsushi , Alatalo Katherine , Rowlands Kate , McDermid Richard M. , Davis Timothy A. , Federrath Christoph , French K. Decker , Heckman Timothy , Ogle Patrick , Kakkad Darshan , Luo Yuanze , Nyland Kristina , Tripathi Akshat , Patil Pallavi , Petric Andreea , Smercina Adam , Skarbinski Maya , Lanz Lauranne , Larson Kristin , Appleton Philip N. , Aalto Susanne , Olander Gustav , Sazonova Elizaveta , Smith J. D. T.
Published: October 2024

We present Gemini near-infrared integral field spectrograph K-band observations of the central 400 pc of NGC 1266, a nearby (D ≈ 30 Mpc) post-starburst galaxy with a powerful multiphase outflow and a shocked interstellar medium. We detect seven H2 rovibrational emission lines excited thermally to T ∼ 2000 K, and weak Brγ emission, consistent with a fast continuous shock (or C-shock). With these bright H2 lines, we observe the spatial structure of the shock with an unambiguous tracer for the first time. The Brγ emission is concentrated in the central ≲100 pc, indicating that any remaining star formation in NGC 1266 is in the nucleus, while the surrounding cold molecular gas has little ongoing star formation. Though it is unclear what fraction of this Brγ emission is from star formation or the active galactic nuclei (AGN), assuming it is entirely due to star formation we measure an instantaneous star formation rate of 0.7 M
⊙ yr−1, though the star formation rate may be significantly higher in the presence of additional extinction. NGC 1266 provides a unique laboratory to study the complex interactions between AGN, outflows, shocks, and star formation, all of which are necessary to unravel the evolution of the post-starburst phase.
Follow-up Timing of 12 Pulsars Discovered in Commensal Radio Astronomy FAST Survey
Authors: Zhao D. , Yuan J. P. , Wang N. , Li D. , Wang P. , Xue M. Y. , Zhu W. W. , Miao C. C. , Yan W. M. , Wang J. B. , Yao J. M. , Wu Q. D. , Wang S. Q. , Sun S. N. , Kou F. F. , Chen Y. T. , Dang S. J. , Feng Y. , Liu Z. J. , Miao X. L. , Meng L. Q. , Yuan M. , Niu C. H. , Niu J. R. , Qian L. , Wang S. , Xie X. Y. , Xiao Y. F. , Yue Y. L. , You S. P. , Yu X. H. , Zhao R. S. , Yuen R. , Zhou X. , Zhang L. , Xie M. , Li Y. X. , Wang Y. B. , Luo Z. K. , Gan Z. Y. , Sun Z. Y. , Chi M. M. , Wang C. J.
Published: October 2024

We present phase-connected timing ephemerides, polarization pulse profiles, and Faraday rotation measurements of 12 pulsars discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey. The observational data for each pulsar span at least 1 yr. Among them, PSR J1840+2843 shows subpulse drifting, and five pulsars are detected to exhibit pulse nulling phenomena. PSR J0640−0139 and PSR J2031−1254 are isolated millisecond pulsars (MSPs) with stable spin-down rates (

P

̇

) of 4.8981(6) × 10−20 s s−1 and 6.01(2) × 10−21 s s−1, respectively. Additionally, one pulsar (PSR J1602−0611) is in a neutron star−white dwarf (WD) binary system with an 18.23-day orbit and a companion of ≤0.65 M
⊙. PSR J1602−0611 has a spin period, companion mass, and orbital eccentricity that are consistent with the theoretical expectations for MSP−helium WD (He WD) systems. Therefore, we believe that it might be an MSP−He WD binary system. The locations of PSR J1751−0542 and PSR J1840+2843 on the

P
−

P

̇

diagram are beyond the traditional death line. This indicates that FAST has discovered some low-

E

̇

pulsars, contributing new samples for testing pulsar radiation theories. We estimated the distances of these 12 pulsars based on NE2001 and YMW16 electron density models, and our work enhances the data set for investigating the electron density model of the Galaxy.
The Diffusion Tensor of Protons at 1 au: Comparing Simulation, Observation, and Theory
Authors: Els P. L. , Engelbrecht N. E. , Lang J. T. , Strauss R. D.
Published: October 2024

The natural variation in plasma parameters observed at 1 au can lead to a variation in transport parameters, such as diffusion and drift coefficients, for energetic charged particles of solar and galactic origin. Given the importance of these parameters to particle transport studies, this variation is investigated through test particle simulations over a range of energies in the presence of simulated turbulence with properties corresponding to an ensemble of observed turbulence conditions at Earth. The resulting transport coefficients are then compared with observational estimates from the literature, as well as the predictions of several scattering theories. Parallel and perpendicular mean free paths are shown to vary widely, for the former in agreement with prior observational estimates, but not for the latter. Furthermore, a large disparity between the predictions of theory and the simulation results is noted for the perpendicular mean free path. As such, these results indicate that particle transport studies, particularly predictive ones, need to take into account this natural variation in transport coefficients.
Hints of a Sulfur-rich Atmosphere around the 1.6 R
⊕ Super-Earth L98-59 d from JWST NIRspec G395H Transmission Spectroscopy
Authors: Gressier Amélie , Espinoza Néstor , Allen Natalie H. , Sing David K. , Banerjee Agnibha , Barstow Joanna K. , Valenti Jeff A. , Lewis Nikole K. , Birkmann Stephan M. , Challener Ryan C. , Manjavacas Elena , Alves de Oliveira Catarina , Crouzet Nicolas , Beck Tracy. L
Published: October 2024

Detecting atmospheres around planets with a radius below 1.6 R
⊕, commonly referred to as rocky planets, has proven to be challenging. However, rocky planets orbiting M dwarfs are ideal candidates due to their favorable planet-to-star radius ratio. Here, we present one transit observation of the Super-Earth L98-59 d (1.58 R
⊕ and 2.31 M
⊕), at the limit of rocky/gas-rich, using the JWST NIRSpec G395H mode covering the 2.8–5.1 μm wavelength range. The extracted transit spectrum from a single transit observation deviates from a flat line by 2.6σ–5.6σ, depending on the data reduction and retrieval setup. The hints of an atmospheric detection are driven by a large absorption feature between 3.3 and 4.8 μm. A stellar contamination retrieval analysis rejected the source of this feature as being due to stellar inhomogeneities, making the best fit an atmospheric model including sulfur-bearing species, suggesting that the atmosphere of L98-59 d may not be at equilibrium. This result will need to be confirmed by the analysis of the second NIRSpec G395H visit in addition to the NIRISS SOSS transit observation.
No Thick Atmosphere on the Terrestrial Exoplanet Gl 486b
Authors: Weiner Mansfield Megan , Xue Qiao , Zhang Michael , Mahajan Alexandra S. , Ih Jegug , Koll Daniel , Bean Jacob L. , Coy Brandon Park , Eastman Jason D. , Kempton Eliza M.-R. , Kite Edwin S.
Published: October 2024

A primary science goal for JWST is to detect and characterize the atmospheres of terrestrial planets orbiting M dwarfs (M-Earths). The existence of atmospheres on M-Earths is highly uncertain because their host stars’ extended history of high X-ray and ultraviolet irradiation may act to completely remove their atmospheres. We present two JWST secondary eclipse observations of the M-Earth Gl 486b (also known as GJ 486b) between 5 and 12 μm. We combined these observations with a precise analysis of the host star parameters to derive a planetary dayside temperature of T
p = 865 ± 14 K. We compared this temperature to the maximum expected temperature for a zero albedo, zero heat redistribution bare rock and derived a temperature ratio of

R
=

T

p
,
dayside

T

p
,
max

=
0.97
±
0.01

. This value is consistent with an airless body with a slight nonzero albedo or a thin atmosphere with <1% H2O or <1 ppm CO2. However, it is inconsistent with an Earth- or Venus-like atmosphere, and the spectrum shows no clear emission or absorption features. Additionally, our observations are inconsistent with the water-rich atmospheric scenario allowed by previous transit observations and suggest the transmission spectrum was instead shaped by stellar contamination. Given the potential for atmospheric escape throughout the system’s ≥6.6 Gyr lifetime, we conclude that the observations are likely best explained by an airless planet. This result is the most precise measurement yet of terrestrial exoplanet thermal emission with JWST, which places a strong constraint on the position of the “cosmic shoreline” between airless bodies and those with atmospheres.
GRANDMA Observations of SN 2023wrk, a Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta
Authors: Andrade Cristina , Duverne Pierre-Alexandre , Liu Jialian , Navarete Felipe , Abdelaziz Abdelaziz E. , Abdelkareem Mohamed , Abdi Ilmah , Aboueisha Mohamed , Adami Christophe , Agayeva Shabnam , Aivazyan Vova , de Almeida Leandro , Akl Dalya , Antier Sarah , Arnaud Yvan , Ata Saad A. , Badawy Wageeh A. , Bai Chunhai , Bendary Reda , Benkhaldoun Zouhair , Borrot Kevin , Broens Eric , Cai Yongzhi , Clerget Olivier , Corradi Wagner , Coughlin Michael W. , Delaunoy Nicolas , Dubois Franky , Ducoin Jean-Grégoire , Elhosseiny Eslam , Esposito Thomas M. , Esamdin Ali , Foulon Pascal , Foulon Roland , Freeberg Michael , Galdies Charles , Gokuldass Priyadarshini , Guillet Bruno , Hamed Gamal M. , Haremza Bruno , Hello Patrice , Hendy Yasser , Huth Patrick , Inasaridze Raguli , Iskandar Abdusamatjan , Kaeouach Aziz , Kamel Tarek M. , Karpov Sergey , Kneip Raymond , Kochiashvili Nino , Kuossari Petri , Li Liping , Li Xin , Liu Jinzhong , Lorber Markus , Mabrouk Raouf H. , Marchais Denis , Maris Elisabeth , Márquez Isabel , Mašek Martin , Ménard Roger , Meneghelli Nicola , Mitchell Mike , Noysena Kanthanakorn , Odeh Mohammad , Ono Wataru , Parent Gérard , Parker Bruce , Peloton Julien , Popowicz Adam , Pradier Thierry , Price Stephen , Pyshna Oleksandra , Rajabov Yodgor , Saibi Fadi , Saibi Sophie , Saint-Gelais Denis , Sasaki Nelio , Serrau Marc , Shimizu Masao , Shokry Ahmed , Simon Andrii , Sokoliuk Oleksii , Takey Ali , Tanasan Manasanun , Tillayev Yusuf , Di Tommaso Giuseppe , Tosta e Melo Iara , Turpin Damien , Wang Xiaofeng , Wang Zhenyu , Zead Ibrahim , Zhang Jujia
Published: October 2024

First detected on 2023 November 4 by the Gravitational-wave Optical Transient Observer, SN 2023wrk is a Type Ia Supernova at 40 Mpc, with significant unburned carbon in the outer ejecta. In this note, we present photometric and spectroscopic observations and analysis conducted by the Global Rapid Advanced Network Devoted to the Multi-messenger Addict over a 115 days period, which includes 78 days of measurements. The observations were contributed by both amateur and professional astronomers. J. Liu et al. analyzed the physical processes involved, and compared the evolution of color and spectral lines. We conclude that SN 2023wrk is the second 1999aa-like object with strong carbon absorption lines that has ever been found, which enriches our understanding of the subclass of 1999aa-like SNe.
La filosofía de la historia como compromiso ético con el futuro
Authors: Belvedresi Rosa E.
Published: October 2024

En este trabajo se intenta mostrar que la filosofía de la historia supone un compromiso ético y que sus reflexiones, además de versar sobre el pasado o sobre la conciencia temporal, también pueden favorecer una crítica del presente que sea útil para generar expectativas positivas acerca del futuro. En primer lugar, se analiza el concepto kantiano de esperanza en el marco de su filosofía de la historia, para rescatar su utilidad política e histórica. Luego, se considera el potencial de este concepto de esperanza de inspiración kantiana para una filosofía de la historia éticamente comprometida. Finalmente, se defiende la idea de que la filosofía de la historia no se restringe a ser una reflexión sobre el pasado o una crítica del conocimiento histórico o una indagación sobre las experiencias temporales. La filosofía de la historia también puede proveer una perspectiva esperanzadora que permita orientar deseos y pronósticos del presente en el camino de la realización de un mundo mejor.
One “True” Meaning
Authors: Mankowitz Poppy
Published: October 2024

Some words express different meanings in different contexts, such as “bank” and “I.” Linguistic alethic pluralists claim that “true” is another such word. This is a surprising thesis that holds implications for debates about the nature of truth. Yet it is in need of careful elaboration and evaluation. I describe several versions of linguistic alethic pluralism, alongside tests that natural language theorists use to identify different types of meaning variation. I also consider empirical studies that have recently targeted the use of “true.” I conclude that there is currently no evidence for linguistic alethic pluralism, and unlikely to be any forthcoming.