bluuebunny/crossref_metadata_2025 huggingface dataset:
Sciatica after intra articular corticosteroids injection
Authors:   Department of Orthopedics, Basrah Teaching Hospital, Basrah Health Directorate, Basrah, Iraq, Kadhim Waleed Jawad , Aledresi Khalid Ahmed Mahmood ,   Department of Orthopedics, Al-sadder Teaching Hospital, Basrah, Iraq, Jassim Husham Hasan ,   Department of Orthopedics, Basrah Teaching Hospital, Basrah Health Directorate, Basrah, Iraq
Published: April 2024

Background. The intra-articular cortico-steroid (IA-CS) injections treatment are still debatable despite its effectiveness. The failure can cause sciatica which IA-CS injected at the sacroiliac joint (SIJ). The study was done to determine non-technical factors that cause recurrent LBP after optimal SIJ IA-CS injections. Methods. A prospective-clinical study was done that looked at recurring sciatica variables in the cases that received intra-articular injection of CS. Cases were diagnosed with sciatica according to the IASP criteria. All patients had intra-articular CS injections. The numerical rating scale (NRS) was used for rating the pain in the SIJ on a range of (0-10). The scale was reviewed 3, 6, and 9 months post treatment. Age, gender, BMI, trauma history, long-term standing, NSAID used and knee pain were all documented as intra-articular injection treatment possible failure factors. Results. In total, 50 subjects were enrolled, with more females (60%) than males (40%). The mean of age was 55.8±7.4 years. History of trauma was reported in 60%. Long sitting and standing history presented in 70% and 20%, respectively. The recurrence of sciatica affected 30(60%) patients. The right sciatica was affecting more than half of the cases (60%). The vast majority of cases (80%) used NSAID. The pain began within the last three months in 80% of the patients. History of CS injection was recorded in 38% of the cases. Lower limb pain was reported in 80% of the cases. Cases with and without recurrence had the mean age of 55.9 ± 9.5 years and 50.6 ± 14.9 years, respectively. The SIJ pain recurrence is strongly connected with elderly and long sitting in logistic regression analysis. Conclusions. Elderly, NSAID utilize, and uni-lateral sciatica involvement are protective factors against SIJ discomfort recurrence.
Role of BoNT-A in patient with post COVID-19 spasticity, assessed by H-reflex
Authors:   Al-Karkh Sector of Health, Medical City, Baghdad, Iraq, Fawzi Safa Muntadher , Jaafar Israa F. ,   Dentistry College Baghdad, Al-Esraa University, Baghdad, Iraq, Fawzi Islam Muntadher ,   Al-Rasafa Sector of Health, Baghdad, Iraq
Published: April 2024

Background. COVID-19 is a pandemic disease due to viral infection. It spread throughout the world, and the association of COVID-19 with neuroendocrine system is a well-known fact especially while the connection between the endocrine and immune system neuroinflammation play a crucial role in pathophysiology. Therapeutic indication of Botulinum-neurotoxin-A (BoNT-A) is used in the treatment of focal post-stroke spasticity (PSS) and in re-habilitation which is regarded as a safe and effective type of treatment. Objective. To assess spasticity after COVID-19 infection. Methods. Thirty patients diagnosed as post-COVID-19 stroke spasticity were enrolled, their age ranged from (30-60 years). They had focal spasticity of lower extremities. BoNT-A was given in day 0 and 4 weeks later, in the gastrocnemius and soleus muscle. H-reflex was recorded from soleus muscles at 1st presentation and 4 weeks after injection of BoNT-A. Muscle power was assessed by Medical Research Council scale (MRC) and MAS. Results. The amplitude and latency of H-reflex record from soleus muscles and the H/M ratio showed a statistically significant difference between pre- and post-therapy with BoNT-A injection in cases with post COVID-19 spasticity. There was a significant increase in MRC scale but, MAS scale showed a significant reduction after injection of BoNT-A. Conclusion. Post COVID spasticity is a well-known complication after COVID-19 infection, there was clinical improvement in PSS post BoNT-A injections, which was assessed clinically by MAS and MRC scale, neurophysiological the H-reflex was correlated negatively regarding latency, while there was no correlation regarding H-reflex amplitude or Hmax/Mmax ratio and MAS.
Variable arachnoid cyst presentations in variable age groups; a comparative single center study
Authors:   Al-Najaf Health Directorate, Al-Najaf, Iraq, Fahad Ahmed Muhi , Al-Khalidi Hasanain A. ,   University of Kufa, Al-Najaf, Iraq, Goloom Shehab A. ,   Middle Euphrates Neurosciences Center, Al-Najaf, Iraq
Published: April 2024

Introduction. Arachnoid cysts are an intracranial spaces that are filled with cerebrospinal fluid (CSF) and lined with arachnoid membranes. They may be asymptomatic or present with focal epilepsy, headache and other neurological symptoms. Purpose. This study shows the different presentation of brain arachnoid cysts in relation to their locations in variable age groups. Methods. This is a retrospective analytic cohort comparative study that enrolled 168 patients was done in the Middle Euphrates Neuroscience Center and Al-Sadder Medical City, from the first of February 2020 to the first of February 2023. The collected data of patients include patient’s age, gender, presentation, location of the cyst in the brain and its dimension. Each patient was assessed a full general and neurological examination. The data were analyzed according to presentation and location of cyst in the brain via MRI. Results. The mean age of group one is 10 years (4-18 years) and for group two is 35 years (19-70 years). Regarding the gender, the male gender was more in group one, while the female gender was more in group two than in group one. Regarding the presentation, the most common presentation is focal epilepsy in about 47.61% in both groups and more in group one (about 68.11%). Regarding the MRI location of arachnoid cyst, the most common site was the temporal lobe. The overall percentage of arachnoid cyst is 57.14% in temporal lobe and 13.09% in occipital lobe in total patients Conclusion. The arachnoid cysts of brain are variable in both their presentations and their locations in different ages. The most common presentation is focal epilepsy in patient 18 years old and less, while the headache in patient older than 18 years. The most common site of cyst is temporal lobe.
Risk factors of dementia cognitive symptoms among older patients in Vietnam: A cross-sectional study
Authors:   University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam, Trinh Ha Thi Bich ,   University Medical Center of Ho Chi Minh City, Ho Chi Minh City, Vietnam, Than The Ha Ngoc ,   University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam,   University Medical Center of Ho Chi Minh City, Ho Chi Minh City, Vietnam, Nguyen Tien Nguyen Ngoc Hoanh My ,   University Medical Center of Ho Chi Minh City, Ho Chi Minh City, Vietnam, Nguyen Tri Van ,   University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam, La Thanh Nguyen Huy ,   Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam, Dinh Hung Cao ,   Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam,   Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
Published: April 2024

Background. Dementia has emerged as a significant contributor to declining quality of life and stands as a prominent factor in the increase of disability and dependency among elderly populations globally. This study aimed to explore the relationship between cognitive symptoms of dementia and their risk factors in individuals aged 60 years and older among Vietnamese outpatients who visited Geriatrics Clinic at University Medical Center of Ho Chi Minh city, Vietnam. Methods. 387 participants who were aged ≥ 60 years old were included in the cross-sectional study. Cognitive impairment was assessed by using the Mini Mental State Evaluation (MMSE) questionnaire. The functional limitations in activities of daily living (ADL) and Instrumental Activities of Daily Living (IADL), multimorbidity, and polypharmacy were also evaluated. Frailty was determined by The Canadian Study of Health and Aging Clinical Frailty Scale. Suffering dementia was determined when MMSE score was below 24 and IADL score less than 8. Results. People with dementia cognitive symptoms accounted for 22.74 % of the cohort. The percentage increased with age, and was higher in women than in men. Factors that increased the odds of having dementia symptoms were of older age, female, multimorbidity, Frailty Scale > Grade 4 and ADL dependency. Conclusions. Age, female gender, multimorbidity, frailty and ADL dependency were considered as risk factors of dementia cognitive symptoms among the Vietnamese people aged 60 years and older.
Influencer Pazarlama Eylemlerinin Tüketici Davranışlarındaki Rolü: YouTube Influencerları Üzerine Bir Araştırma
Authors: Göktaş Bora , Eroğlu Rezzan
Published: April 2024

Dijital devrimle zaman, mekan ve kalite kavramları tamamen değiştiğinden bugünün işletmeleri sadece fiziksel olarak var olmamakta, artık sanal ortamda da boy gösterebilmektedirler ve hatta sadece herhangi bir dijital medyada faaliyet yürütebilmektedirler. Dijital medya dünyayı etkilemeye devam ederken, influencer pazarlama da markanın pazarlama bütçesinin bir parçası haline gelmektedir. Influencerlar (etkileyiciler), markaların daha geniş bir potansiyel müşteri grubuna tesir ederek, başarı oranlarını artırabilecek pazarlama stratejilerinden biridir. Çünkü toplumun genelini bir araya getiren sosyal medya araçlarında influencerların markalar için yaptığı paylaşımlar hedeflenen kitlenin dikkatini çekebilmektedir. Bu çalışmada bir dijital pazarlama stratejisi olan influencer pazarlamanın tüketici davranışındaki rolünün youtube influencerları üzerinden incelenmesi amaçlanmıştır. Bu nedenle çalışmada önce influencer pazarlama ve tüketici davranışları kavramlarından bahsedilmiştir. Çalışmanın uygulama kısmı için çevrimiçi bir anket gerçekleştirilmiş 477 katılımcıdan oluşan bir veri seti hazırlanmıştır ve bu veriler SPSS26 paket programında analize tabi tutulmuştur. Elde edilen bulgulara göre influencerların YouTube platformunda gerçekleştirdiği pazarlama etkinliklerinin satın alma, eğlence ve güvenilirlik boyutları üzerinde olumlu yönde bir etkisi olduğu; buna karşın rahatsız edicilik boyutu üzerinde ise bir etkisi olmadığı sonucu elde edilmiştir. Ayrıca boyutların ortalamalarına bakıldığında katılımcıların influencerlardan rahatsız olmadıkları ve onları güvenilir buldukları sonuçlarına ulaşılmıştır. Çalışma bu bulgularıyla; YouTube’da faaliyet gösteren influencerların stratejiler oluşturmasına, influencerlardan faydalanan markaların etkinliklerinin planlanmasına fayda sağlayabilecek ve ayrıca yeni araştırmaların gerçekleşmesine ışık tutabilecektir.
Örgütsel Sessizlik Olgusu ve Örgütlere Olan Etkisi: Kavramsal Bir Çerçeve
Authors: Biçer Can
Published: April 2024

Bu kavramsal araştırma makalesinin konusu örgütsel sessizliktir ve örgütlere olan etkilerine odaklanmaktadır. Sessizlik örgütlerde yaygın görülmesine rağmen alan yazında nedenleri, etkisi ve ana bileşenleri hakkında çok fazla araştırma bulunmamaktadır. Bu nedenle bu çalışmanın amacı örgütsel sessizlik olgusunu irdelemek ve çalışanların örgütlerde neden sessiz kalmayı tercih ettikleri üzerine gelecekteki araştırmacılara rehberlik edebilecek bir başlangıç oluşturmaktır. Çalışanların hem örgütsel sorunlarla ilgili hem de karar alma süreçlerinde fikirlerini özellikle kasıtlı olarak dile getirmemeleri iş akışını bozmaktadır ve gerekli önlemler alınmaması halinde örgütsel seviyeye çıkabilir ve sonucunda çalışanların performansını ve motivasyonunun olumsuz yönde etkilemekle kalmaz, aynı zamanda beklenmedik büyük mali yüklere yol açabilir. Ayrıca, çalışanı en değerli varlık olarak gören ve şimdilerde insan kaynağını merkeze alan güncel yönetim yaklaşımlarıyla da çelişmektedir. Sonuç olarak, bu çalışma örgütsel sessizlik olgusunu hakkında yapılmış olan çalışmalar ışığında kavramsal bir çerçeve sunmakta neden olabileceği etkileri hakkında bir bakış açısı ortaya koymakta ve örgütlerdeki olumsuz etkilerinin azaltılması konusunda çözüm önerilerinde bulunmaktadır.
EFEKTIVITAS MODEL PEMBELAJARAN BLENDED-LEARNING TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA
Authors: AYU LESTARI PRAMUSINTA , SRI ASTUTIK HENY , SUMADI SUHARTINI , SYAMSURIZAL
Published: April 2024

Penelitian ini bertujuan untuk menguji keekfetivan model pembelajaran blended-learning terhadap kemampuan pemecahan masalah matematika. Penelitian ini merupakan penelitian kuantitaf eksperimen one group pretest-posttest design dengan lokasi penelitian di SMPN 16 Kab. Sorong. Teknik pengumpulan data menggunakan teknik tes dengan isntrumen soal uraina, dan teknik Observasi dengan instrument Lembar Observasi Keterlaksanaan Pembelajaran. Selanjutnya data dianalisis menggunakan uji normalitas, uji paired sample t-test dan Uji N – gain score. Hasil penelitian bahwa nilai rata – rata post – test sebesar 3,055 dan pre – test sebesar 3,198. Dengan demikian nilai post – test > pre – test. Berdasarkan kualifikasi kemapuan pemecahan masalah matematika, maka tingkat kemampuan pemecahan masalah peserta didik tergolong rendah karena mean 24,83 < 54,99. Selanjutnya hasiln N-gain score adalah 0,14 dan niliai minimumnya adalah 0,03. Sedangkan nilai maximum dari n – gain persen adalah 14,29 dan nilai minimumnya adalah 2,50. Selain itu diketahui juga bahwa nilai rata – rata N – gain score adalah sebesar 0,0824 yang masuk dalam kategori rendah karena nilai g < 0,3 dan N- gain persen sebesar 8,2442 atau 8,24% yang masuk pada kategori tafsiran tidak efektif karena nilai persentase yang dihasilkan < 40%. Dari hasil uji hipotesis dapat disimpulkan bahwa model pembelajaran blended – learning tidak efektif terhadap kemapuan pemecahan masalah matematika pada peserta didik kelas VII di SMPN 16 Kab. Sorong.
Collision Avoidance Systems for Vehicle Safety Using Ultrasonic Distance Sensing Eye Blink Sensor and Alcohol Detector
Authors: Mazumdar Soumya , Chowdhury Shivam , Giri Souravdeep , Bhattacharya Adrita
Published: April 2024

Car wrecks are increasingly seen as a major safety issue; damage and fatality reports from these collisions are frequent. There are also more pedestrians who are killed by automobile accidents in cities and on highways. Additionally, autonomous cars often kill wild creatures that go farther into nature reserves. One cannot put a figure on the cost of a life, yet auto accidents hurt assets. This study looks at the creation and use of a complete collision avoidance system with the goal of improving vehicle safety by using cutting-edge technology. The suggested system includes an alcohol detector to stop accidents caused by intoxicated driving, an eye blink sensor to identify driver weariness, and an ultrasonic distance sensor to enable automated braking and collision avoidance. These sensors are seamlessly integrated to identify possible traffic dangers and initiate necessary reactions, all without depending on driver participation, thanks to the use of Arduino microcontrollers. The system design, methodology, and experimental findings are discussed in the study, which also shows how successful this integrated approach is at reducing road accidents. This study advances the global objective of increasing road safety by democratizing access to cutting-edge safety features that were previously only available in expensive cars.
Automatic Power Factor Controller
Authors: Haridas Bhure Swati , Rana J. R.
Published: April 2024

Automatic Power Factor Controllers (APFCs) play a crucial role in modern electrical systems by ensuring efficient electrical power and improving power quality. This paper presents a comprehensive overview of the Design, implementation, and performance analysis of an APFC system. The proposed APFC system employs advanced control techniques to regulate the power factor of the electrical load, thereby minimizing reactive power consumption and optimizing overall system efficiency. The design process encompasses the selection of suitable power electronics converters, control algorithms, and sensing techniques tailored to the requirements of an application. The results demonstrate significant improvements in power quality, energy utilization, and system stability, thereby highlighting the practical relevance and applicability of the developed APFC technology.
On the Rigidly Precessing, Eccentric Gas Disk Orbiting the White Dwarf SDSS J1228+1040
Authors: Goksu Olcay Ates , Kutra Taylor , Wu Yanqin
Published: April 2024

Metal pollution onto white dwarfs is a widespread phenomenon that remains puzzling. Some of these white dwarfs also harbor gaseous debris disks. Emission lines from these disks open a unique window to the physical properties of the polluting material, lending insights into their origin. We model the emission line kinematics for the gas disk around SDSS J1228+1040, a system that has been monitored for over two decades. We show that the disk mass is strongly peaked at 1 R
⊙ (modulo the unknown inclination), and the disk eccentricity decreases from a value of 0.44 at the inner edge, to nearly zero at the outer edge. This eccentricity profile is exactly what one expects if the disk is in a global eccentric mode, precessing rigidly under general relativity and gas pressure. The precession period is about two decades. We infer that the mass of the gas disk is roughly equivalent to that of a 50 km rocky body, while the mass of the accompanying dust disk is likely insignificant. The disk eccentricity confirms an origin in tidal disruption, while the short disk diffusion time suggests that the disruption event happened a few centuries ago. Moreover, we argue that the initial orbit for the disrupted body, and that of its putative planetary perturber, fall within an astronomical unit around the white dwarf. The total mass of the source population is likely orders of magnitude more massive than our own Asteroid belt and does not seem to exist around main-sequence stars.
Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
Authors: O’Brien Sean M. , Schwamb Megan E. , Gill Samuel , Watson Christopher A. , Burleigh Matthew R. , Kendall Alicia , Casewell Sarah L. , Anderson David R. , Vines José I. , Jenkins James S. , Alves Douglas R. , Trouille Laura , Ulmer-Moll Solène , Bryant Edward M. , Apergis Ioannis , Battley Matthew , Bayliss Daniel , Eisner Nora L. , Gillen Edward , Goad Michael R. , Günther Maximilian N. , Henderson Beth A. , Heo Jeong-Eun , Jackson David G. , Lintott Chris , McCormac James , Moyano Maximiliano , Nielsen Louise D. , Osborn Ares , Saha Suman , Sefako Ramotholo R. , Stephens Andrew W. , Tilbrook Rosanna H. , Udry Stéphane , West Richard G. , Wheatley Peter J. , Zivave Tafadzwa , Lim See Min , Sainio Arttu
Published: April 2024

We present the results from the first two years of the Planet Hunters Next Generation Transit Survey (NGTS) citizen science project, which searches for transiting planet candidates in data from the NGTS by enlisting the help of members of the general public. Over 8000 registered volunteers reviewed 138,198 light curves from the NGTS Public Data Releases 1 and 2. We utilize a user weighting scheme to combine the classifications of multiple users to identify the most promising planet candidates not initially discovered by the NGTS team. We highlight the five most interesting planet candidates detected through this search, which are all candidate short-period giant planets. This includes the TIC-165227846 system that, if confirmed, would be the lowest-mass star to host a close-in giant planet. We assess the detection efficiency of the project by determining the number of confirmed planets from the NASA Exoplanet Archive and TESS Objects of Interest (TOIs) successfully recovered by this search and find that 74% of confirmed planets and 63% of TOIs detected by NGTS are recovered by the Planet Hunters NGTS project. The identification of new planet candidates shows that the citizen science approach can provide a complementary method to the detection of exoplanets with ground-based surveys such as NGTS.
High-precision Atmospheric Characterization of a Y Dwarf with JWST NIRSpec G395H Spectroscopy: Isotopologue, C/O Ratio, Metallicity, and the Abundances of Six Molecular Species
Authors: Lew Ben W. P. , Roellig Thomas , Batalha Natasha E. , Line Michael , Greene Thomas , Murkherjee Sagnick , Freedman Richard , Meyer Michael , Beichman Charles , Alves de Oliveira Catarina , De Furio Matthew , Johnstone Doug , Greenbaum Alexandra Z. , Marley Mark , Fortney Jonathan J. , Young Erick T. , Leisenring Jarron , Boyer Martha , Hodapp Klaus , Misselt Karl , Stansberry John , Rieke Marcia
Published: April 2024

The launch of the James Webb Space Telescope (JWST) marks a pivotal moment for precise atmospheric characterization of Y dwarfs, the coldest brown dwarf spectral type. In this study, we leverage moderate spectral resolution observations (R ∼ 2700) with the G395H grating of the Near-Infrared Spectrograph (NIRSpec) on board JWST to characterize the nearby (9.9 pc) Y dwarf WISEPA J182831.08+265037.8. With the NIRSpec G395H 2.88–5.12 μm spectrum, we measure the abundances of CO, CO2, CH4, H2S, NH3, and H2O, which are the major carbon-, nitrogen-, oxygen-, and sulfur-bearing species in the atmosphere. Based on the retrieved volume mixing ratios with the atmospheric retrieval framework CHIMERA, we report that the C/O ratio is 0.45 ± 0.01, close to the solar C/O value of 0.458, and the metallicity is +0.30 ± 0.02 dex. Comparison between the retrieval results and the forward modeling results suggests that the model bias for C/O and metallicity could be as high as 0.03 and 0.97 dex, respectively. We also report a lower limit of the 12CO/13CO ratio of >40, being consistent with the nominal solar value of 90. Our results highlight the potential for JWST to measure the C/O ratios down to percent-level precision and characterize isotopologues of cold planetary atmospheres similar to WISE 1828.
Wide-spectral-band Nuller Insensitive to Finite Stellar Angular Diameter with a One-dimensional Diffraction-limited Coronagraph
Authors: Itoh Satoshi , Matsuo Taro , Tamura Motohide
Published: April 2024

Potentially habitable planets around nearby stars less massive than solar-type stars could join targets of the spectroscopy of the planetary reflected light with future space telescopes. However, the orbits of most of these planets occur near the diffraction limit for 6 m diameter telescopes. Thus, while securing contrast-mitigation ability under a broad spectral bandwidth and a finite stellar angular diameter, we must maintain planetary throughput even at the diffraction-limited angles to be able to reduce the effect of the photon noise within a reasonable observation time. A one-dimensional diffraction-limited coronagraph (1DDLC) observes planets near the diffraction limit with undistorted point spread functions but has a finite-stellar diameter problem in wideband use. This study presents a method for wide-spectral-band nulling insensitive to stellar-angular-diameter by adding a fiber nulling with a Lyot-plane phase mask to the 1DDLC. Designing the pattern of the Lyot-plane mask function focuses on the parity of the amplitude spread function of light. Our numerical simulation shows that the planetary throughput (including the fiber-coupling efficiency) can reach about 11% for about 1.35-λ/D planetary separation almost independently of the spectral bandwidth. The simulation also shows the raw contrast of about 4 × 10−8 (the spectral bandwidth of 25%) and 5 × 10−10 (the spectral bandwidth of 10%) for 3 × 10−2
λ/D stellar angular diameter. The planetary throughput depends on the planetary azimuthal angle, which may degrade the exploration efficiency compared to an isotropic throughput but is partially offset the wide spectral band.
The Heavy Metal Survey: Star Formation Constraints and Dynamical Masses of 21 Massive Quiescent Galaxies at z = 1.3–2.3
Authors: Kriek Mariska , Beverage Aliza G. , Price Sedona H. , Suess Katherine A. , Barro Guillermo , Bezanson Rachel S. , Conroy Charlie , Cutler Sam E. , Franx Marijn , Lin Jamie , Lorenz Brian , Ma Yilun , Momcheva Ivelina G. , Mowla Lamiya A. , Pasha Imad , van Dokkum Pieter , Whitaker Katherine E.
Published: April 2024

In this paper, we present the Heavy Metal Survey, which obtained ultradeep medium-resolution spectra of 21 massive quiescent galaxies at 1.3 < z < 2.3 with Keck/LRIS and MOSFIRE. With integration times of up to 16 hr per band per galaxy, we observe numerous Balmer and metal absorption lines in atmospheric windows. We successfully derive spectroscopic redshifts for all 21 galaxies, and for 19 we also measure stellar velocity dispersions (σ

v
), ages, and elemental abundances, as detailed in an accompanying paper. Except for one emission-line active galactic nucleus, all galaxies are confirmed as quiescent through their faint or absent Hα emission and evolved stellar spectra. For most galaxies exhibiting faint Hα, elevated [N ii]/Hα suggests a non-star-forming origin. We calculate dynamical masses (M
dyn) by combining σ

v
with structural parameters obtained from the Hubble Space Telescope COSMOS(-DASH) survey and compare them with stellar masses (M
*) derived using spectrophotometric modeling, considering various assumptions. For a fixed initial mass function (IMF), we observe a strong correlation between M
dyn/M
* and σ

v
. This correlation may suggest that a varying IMF, with high-σ

v
galaxies being more bottom heavy, was already in place at z ∼ 2. When implementing the σ

v
-dependent IMF found in the cores of nearby early-type galaxies and correcting for biases in our stellar mass and size measurements, we find a low scatter in M
dyn/M
* of 0.14 dex. However, these assumptions result in unphysical stellar masses, which exceed the dynamical masses by 34%. This tension suggests that distant quiescent galaxies do not simply grow inside-out into today’s massive early-type galaxies and the evolution is more complicated.
Emulating Power Spectra for Prereconstructed and Postreconstructed Galaxy Samples
Authors: Wang Yuting , Zhao Ruiyang , Zhai Zhongxu , Koyama Kazuya , Percival Will J. , Guo Hong , Li Yin , Zhao Gong-Bo , Nishimichi Takahiro , Gil-Marín Héctor , Feng Yonghao , Zhang Hanyu , Wu Yi
Published: April 2024

The small-scale linear information in galaxy samples typically lost during nonlinear growth can be restored to a certain level by the density field reconstruction, which has been demonstrated for improving the precision of the baryon acoustic oscillation (BAO) measurements. As proposed in the literature, a joint analysis of the power spectrum before and after the reconstruction enables an efficient extraction of information carried by high-order statistics. However, the statistics of the postreconstruction density field are difficult to model. In this work, we circumvent this issue by developing an accurate emulator for the prereconstructed, postreconstructed, and cross-power spectra (

P

pre

, P
post, P
cross) up to k = 0.5 h Mpc−1 based on the Dark Quest
N-body simulations. The accuracy of the emulator is at the percent level; namely, the error of the emulated monopole and quadrupole of the power spectra is less than 1% and 10% of the ground truth, respectively. A fit to an example power spectrum using the emulator shows that the constraints on cosmological parameters get largely improved using

P

pre

+P
post+P
cross with

k

max

=
0.25

h

Mpc

−
1

, compared to that derived from

P

pre

alone; namely, the constraints on (Ω
m
, H
0, σ
8) are tightened by ∼41%–55%, and the uncertainties of the derived BAO and RSD parameters (α
⊥, α
∣∣, f
σ
8) shrink by ∼28%–54%, respectively. This highlights the complementarity among

P

pre

, P
post, and P
cross, which demonstrates the efficiency and practicability of a joint

P

pre

, P
post, and P
cross analysis for cosmological implications.
Signatures of Tidal Disruption of the Hercules Ultrafaint Dwarf Galaxy*
Authors: Ou 欧 Xiaowei 筱葳 , Chiti Anirudh , Shipp Nora , Simon Joshua D. , Geha Marla , Frebel Anna , Mardini Mohammad K. , Erkal Denis , Necib Lina
Published: April 2024

The Hercules ultrafaint dwarf galaxy (UFD) has long been hypothesized to be tidally disrupting, yet no conclusive evidence has been found for tidal disruption owing partly to difficulties in identifying Hercules member stars. In this work, we present a homogeneous reanalysis of new and existing observations of Hercules, including the detection of a new potential member star located ∼1° (∼1.7 kpc) west of the center of the system. In addition to measuring the line-of-sight velocity gradient, we compare predictions from dynamical models of stream formation to these observations. We report an updated velocity dispersion measurement based on 28 stars,

1.9

−
0.6

+
0.6

km s−1, which is significantly lower than previous measurements. We find that the line-of-sight velocity gradient is

1.8

−
1.8

+
1.8

km s−1 kpc along the major axis of Hercules, consistent with zero within 1σ. Our dynamical models of stream formation, on the other hand, can reproduce the morphology of the Hercules UFD, specifically the misalignment between the elongation and the orbital motion direction. Additionally, these dynamical models indicate that any radial velocity gradient from tidal disruption would be too small,

0.00

−
0.91

+
0.97

km s−1 kpc, to be detectable with current sample sizes. Combined with our analysis of the tidal radius evolution of the system as a function of its orbital phase, we argue that it is likely that Hercules is indeed currently undergoing tidal disruption in its extended stellar halo with a line-of-sight velocity gradient too small to be detected with current observational data sets.
Large Fluctuations within 1 au in Protoplanetary Disks
Authors: Chambers John
Published: April 2024

Protoplanetary disks are often assumed to change slowly and smoothly during planet formation. Here, we investigate the time evolution of isolated disks subject to viscosity and a disk wind. The viscosity is assumed to increase rapidly at around 900 K due to thermal ionization of alkali metals, or thermionic and ion emission from dust, and the onset of magnetorotational instability (MRI). The disks generally undergo large, rapid fluctuations for a wide range of time-averaged mass accretion rates. Fluctuations involve coupled waves in temperature and surface density that move radially in either direction through the inner 1.5 au of the disk. Two types of waves are seen with radial speeds of roughly 50 and 1000 cm s−1, respectively. The pattern of waves repeats with a period of roughly 10,000 yr that depends weakly on the average mass accretion rate. Viscous transport due to MRI is confined to the inner disk. This region is resupplied by mass flux from the outer disk driven by the disk wind. Interior to 1 au, the temperature and surface density can vary by a factor of 2–10 on timescales of years to kiloyears. The stellar mass accretion rate varies by 3 orders of magnitude on a similar timescale. This behavior lasts for at least 1 Myr for initial disks comparable to the minimum-mass solar nebula.
High-resolution Spectroscopic Reconnaissance of a Temperate Sub-Neptune
Authors: Cabot Samuel H. C. , Madhusudhan Nikku , Constantinou Savvas , Valencia Diana , Vos Johanna M. , Masseron Thomas , Cheverall Connor J.
Published: April 2024

The study of temperate sub-Neptunes is the new frontier in exoplanetary science. A major development in the past year has been the first detection of carbon-bearing molecules in the atmosphere of a temperate sub-Neptune, K2-18 b, a possible Hycean world, with the James Webb Space Telescope (JWST). The JWST is poised to characterize the atmospheres of several other such planets, with important implications for planetary processes in the temperate regime. Meanwhile, ground-based high-resolution spectroscopy has been highly successful in detecting chemical signatures of giant exoplanets, though low-mass planets have remained elusive. In the present work, we report the atmospheric reconnaissance of a temperate sub-Neptune, TOI-732 c, using ground-based high-resolution transmission spectroscopy. The long orbital period and the low systemic velocity result in a low planetary radial velocity during transit, making this system a valuable test bed for high-resolution spectroscopy of temperate sub-Neptunes. We observe high-resolution time-series spectroscopy in the H and K bands during the planetary transit with the IGRINS instrument (R ∼ 45,000) on Gemini-South. Using observations from a single transit, we find marginal evidence (2.2σ) for the presence of methane (CH4) in the atmosphere and no evidence for ammonia (NH3) despite its strong detectability for a cloud-free H2-rich atmosphere. We assess our findings using injection tests with different atmospheric scenarios and find them to be consistent with a high CH4/NH3 ratio and/or the presence of high-altitude clouds. Our results demonstrate the capability of Gemini-S/IGRINS for atmospheric characterization of temperate sub-Neptunes and the complementarity between space- and ground-based facilities in this planetary regime.
Validating Gaia DR3 Pulsating Variable Classifications with TESS: Building Reliable δ Scuti and γ Doradus Stars Catalogs (In Progress)*
Authors: Zhou Ai-Ying
Published: April 2024

Gaia DR3 revealed 748,058 pulsating variable stars of mixed DSCT∣GDOR∣SXPHE types. This project undertakes a comprehensive examination to validate and distinguish these stars using Transiting Exoplanet Survey Satellite data. Aiming for reliable catalogs of bona fide δ Scuti and γ Doradus stars, I have validated 1715 δ Scuti stars, 1403 γ Doradus stars, and identified 260 eclipsing binaries, one RR Lyrae star, and 460+ rotating variables from an initial sample of 16,690 objects. Notably, 15 of the newfound eclipsing binaries harbor pulsating γ Doradus components.
Pas sans l’hystérique
Authors: Pickmann Claude-Noële
Published: April 2024

Lacan disait de l’hystérie que c’est l’inconscient en exercice. C’est que, à suivre l’hystérique dans son discours, on est conduit vers une limite qui est celle de la structure elle-même, celle où le symbolique, de n’être pas-tout, ouvre sur le réel d’une jouissance que le phallique ignore, désignant de la sorte ce qui ne saurait en être éliminé sans conduire au pire.
L’Inquiétant en philosophie politique chez Sophocle et Heidegger
Authors: Kriegel Blandine
Published: April 2024

L’interprétation de l’ Antigone de Sophocle proposée par Heidegger est résolument opposée à la philosophie politique des Anciens (Aristote et Platon) et des modernes de l’École du droit de la nature et des gens. L’auteure montre ici que la conception politique de Heidegger qui attribue à la violence et à l’avantage le fondement de la politique est solidaire de sa représentation de l’Homme, mais elle repose sur une torsion philologique du texte de Sophocle particulièrement éclatante et préoccupante. Elle a d’ailleurs été prise avec précaution naguère par Michel Foucault et Jacques Lacan. La tragédie de Sophocle n’oublie pas la philosophie qui ne peut être à son tour réduite à la tragédie.
L’inconscient est la politique
Authors: Birman Joel
Published: April 2024

Le propos de cet article est de démontrer la véracité et la légitimité de l’aphorisme de Lacan que l’inconscient est la politique, en reprenant, dans une perspective généalogique, les effets traumatiques de la dictature militaire sur les formes de subjectivation au Brésil, par la constitution d’une dette à l’égard des morts de la dictature militaire.
La passion dans l’amitié
Authors: Brun Danièle , Sédat Jacques
Published: April 2024

Ce texte prolonge les débats qui ont eu lieu suite à la publication du livre de Danièle Brun, La passion dans l’amitié . Au cours de ces discussions, Danièle Brun a sollicité une analyse historique des conceptions différentes de « l’amitié » et de « l’amour ». L’article explore les distinctions entre l’amitié antique et l’amitié moderne en analysant le lexique de l’amour et de l’amitié dans le monde grec et dans le monde latin, avec les incidences pour notre culture. Les modèles d’amitié depuis l’Antiquité, souvent évoqués par Freud. Ce texte reprend l’idée que l’amour antique passe du sensible à l’intelligible, en se fondant sur la philosophie grecque et la philosophie latine, tout en évoquant le lien entre l’amour, la beauté, la connaissance et la quête de l’unité intérieure et cosmique. Montaigne dans une vision moderne introduit l’amitié comme communauté d’esprit. Cette discussion évoque la primauté de l’intellect dans l’amour moderne, à la suite de Freud et se termine en suggérant que la conception moderne de l’amitié et de l’amour se concentre sur la recherche des traces des premières expériences de plaisir qui introduisent à la quête de l’objet perdu, témoignant d’une nouvelle conception de l’amour.
« Qui chante ce soir à la Philharmonie ? » La (non-)participation culturelle en ­­Île-­­de-France
Authors: Bordat-Chauvin Élodie
Published: April 2024

À partir du matériau réuni dans le cadre ­­d’une enquête ethnographique au sein de concerts participatifs à la Philharmonie de Paris, nous proposons ­­d’analyser les dispositifs mis en œuvre pour favoriser la participation culturelle des publics dits éloignés : les populations en situation de précarité ­­socio-­­économique, de handicap ou en demande ­­d’asile. En analysant les trajectoires des personnes ayant entendu parler du projet mais ­­n’ayant pas souhaité participer ou ayant fait défection, nous tenterons ­­d’esquisser le portrait de la ­­non-­­participation culturelle en ­­Île-­­de-France.
Centrafrique : Trouble conversif et langage du corps à Bangui : le cas d’Emmanuela
Authors: Tabo André , Gondia Guylaine Marie Danielle , Mouanga Alain Maxime , Gansou Grégoire Magloire , Danimon Gaston , Caleb Kette Grégoire , Koutou Nathalie Agnès , Gomossa Sylvain , Tognidé Mathieu C. , Ezin-Houngbe Josiane , Ahyi René Gualbert
Published: April 2024

chez la plupart des patients que nous recevons à Bangui, l’expression des symptômes de plusieurs troubles mentaux est fréquemment centrée sur le corps qui est surinvesti. Cela allonge et complexifie le parcours des soins et retarde la thérapeutique appropriée. Aux fins de dégager l’intérêt des soins précoces en psychiatrie et de montrer la nécessité de former en nombre suffisant les ressources humaines en santé mentale en Centrafrique, nous avons décrit l’itinéraire thérapeutique d’une adolescente de 14 ans, qui a souffert d’une affection mentale ayant un masque somatique. Après avoir parcouru presque tous les spécialistes de la capitale, Emmanuela et sa tante ont consulté en psychiatrie plusieurs mois après le début des premiers symptômes. Le diagnostic posé était le trouble conversif associé à un état dépressif d’intensité moyenne. Emmanuela a bénéficié pendant 04 ans de la psychothérapie d’inspiration psychanalytique et d’un suivi psychiatrique régulier. Elle se porte bien.
Togo : Mastectomie et dysfonctionnement conjugal : étude d’un cas clinique de couple
Authors: Poromna Pagnamam , Houessou Patrick , Degboe Zinsou Selom , Gansou Grégoire Magloire , Mendouana Sema , Balassa Paul Koudjoudra , Ayeboua Folly Holla , Noku Akouvi Eyonam
Published: April 2024

le cancer est une maladie qui occasionne un véritable bouleversement dans la vie de la victime. Le cancer du sein et particulièrement la mastectomie traumatise la femme et par ricochet influence le fonctionnement conjugal. De cette étude, nous cherchons à montrer comment les traumatismes psychiques issus, de la mastectomie sont sources des dysfonctionnements observés dans le couple. Il s’agit d’une étude de cas clinique menée d’une manière prospective et longitudinale sur un couple. Le couple est reçu une semaine avant la mastectomie de la femme. Il est sélectionné par la méthode Ah doc. Les données ont été recueillies à travers trois entretiens cliniques. Nous avons également fait recours au test de la TrauMaq (Damiani et Pereira, 2006), l’échelle des questionnaires sur les pensées négatives et les inquiétudes durant les rapports sexuels (Trudel, Ravart et Turgeon, 1998) cités par (Cottraux et Bouvard, 1985), l’échelle de (Spanier, 1976) sur la relation du couple et l’échelle d’auto-évaluation des problèmes sexuels masculins et féminins de (Cottraux et Bouvard, 1985) ont été administrées séparément au couple. Il ressort de cette étude que la mastectomie occasionne un véritable traumatisme dans la vie de la femme. On note une culpabilité de la femme par rapport à son époux, car cette opération chirurgicale réveille les conflits infantiles non résolus ce qui l‘empêche de jouer réellement son rôle de bonne épouse. Elle vit une certaine ambivalence entre l’amour et la haine. Elle a également besoin de l’intimité pour se reconstruire après le traumatisme. Ainsi, la mastectomie bouleverse réciproquement la vie du couple. L’homme est plus affecté sur le plan affectif. Le couple est également bouleversé sur le plan sexuel et la femme a une pensée négative d’elle-même lors des rapports sexuels. Cette étude confirme que le traumatisme issu de la mastectomie occasionne un dysfonctionnement conjugal dans la vie du couple. Le vécu de l’un ne laisse pas indifférent l’autre.
Niger : Hyperthermie de Patient sous Neuroleptiques (HPN) ou hyperthermie Maligne des Neuroleptiques (SMN) en Afrique subsaharienne ? À propos de deux cas cliniques et d’une revue de la littérature
Authors: Douma Maiga Djibo , Soumaila A , Salifou Abdou Moubarack M
Published: April 2024

nous rapportons deux cas hyperthermie chez des patients sous neuroleptiques dans le contexte de l’Afrique subsaharienne. À partir de ces deux cas et d’une revue de la littérature, l’objectif était de mettre en évidence, les difficultés diagnostiques en identifiant les arguments anamnestiques et cliniques en faveur d’une hyperthermie maligne des neuroleptiques (HMN) et d’une hyperthermie de patient sous neuroleptiques (HPN). La physiopathologie des hyperthermies des anesthésiques et du coup de chaleur plaide en faveur de la complication possible des fièvres en hyperthermie en Afrique subsaharienne. Nous proposons par conséquent le terme de HMPN à la place d’HMN jusqu’à la preuve du contraire.
Du désir et des vœux
Authors: Aparicio Sol
Published: April 2024

Le propre de ce que Lacan a dénommé « le champ freudien de l’expérience » est d’être orienté par le désir. Encore faut-il s’entendre sur ce que ce terme usuel veut dire quand c’est de la pratique et de la théorie psychanalytiques qu’il s’agit. C’est ce que Lacan n’a cessé de préciser en lisant et en traduisant Freud. Pour enfin souligner les désaccords entre les langues allemande et française et mieux dire ainsi ce qu’il en est du désir, compte tenu du champ des jouissances, dans le discours analytique proprement dit.
Le désir cause d’inhibitions
Authors: Montel Jean-Paul
Published: April 2024

Pour Freud, l’inhibition définie comme défense, est indissociable du moi qui fait alors barrage à la jouissance. Sur un autre versant, l’inhibition comme symptôme, est l’effet du refoulement. Dans les deux cas, elle nous préserve d’une confrontation à l’angoisse. Lacan situe celle-ci au lieu même du désir, il réarticule alors l’inhibition au désir inconscient comme défense et à l’acte comme suspension du mouvement. La tragédie d’Hamlet en témoigne, l‘inhibition comme blocage de l’acte a partie liée avec un désir contre un autre désir.
Évolution de la clinique chez Lacan
Authors: Guitart-Pont Rosa
Published: April 2024

Loin de s’en tenir à la description phénoménologique des cas pour rendre compte de la clinique, Lacan a eu recours à l’écriture topologique. Ce texte rappelle quelques étapes du work in progress lacanien et notamment le passage de la topologie du graphe du désir à celle du nœud borroméen.
La topologie du désir
Authors: Staricky Annie
Published: April 2024

Le désir est d’abord le désir de l’Autre, à partir duquel le sujet constitue son propre désir par une torsion. En 1964, dans Les quatre concepts fondamentaux de la psychanalyse , Lacan identifie cette torsion au recouvrement de deux manques : c’est avec son manque-à-être (aliénation) que le sujet se fait disparaître au lieu de l’Autre (séparation) pour poser la question de son désir, Che Vuoi  ? Dans la cure, cette torsion se produit de la chute du sujet supposé savoir, où le sujet se destitue et rencontre l’objet a , cause du désir. En 1965, dans Les problèmes cruciaux , Lacan fait de cette torsion « une clé pour la topologie du désir. »
Frustration, privation, castration. Trois modes de manque, un désir
Authors: Blouin Élodie
Published: April 2024

À partir des Séminaire IV et V de J. Lacan, nous tenterons de dégager le nouage entre les trois registres du symbolique, du réel et de l’imaginaire et les trois catégories subjectives du manque et d’en saisir leur portée clinique.
Du résultat de la soustraction
Authors: Latour Marie-José
Published: April 2024

C’est en s’appuyant sur l’observation de l’enfant que Lacan va mettre en évidence l’articulation besoin, demande, désir. L’expérience analytique avec les enfants nous reconduit à prendre la mesure de l’empan structural de l’opération soustractive que le langage inflige au vivant. Le résultat de cette soustraction est congruente à la dimension inéducable du désir.
« Désir encore en morceaux »
Authors: Caraës Emmanuel
Published: April 2024

Le suivi clinique d’un petit garçon de 2 ans, qui au départ, ne reconnaît pas son image dans le miroir. Il s’agira de montrer la manière particulière dont l’objet oral s’attache à la représentation d’unité du corps dans le miroir, et relève de ce que Lacan déplie du stade spéculaire : « Avant que le désir n’apprenne à se reconnaître […] par le symbole, il n’est vu que dans l’autre » et est « […] un désir encore en morceaux ».
Le Pari de Rohmer
Authors: Valtat Jean-Michel
Published: April 2024

Le cinéma d’Eric Rohmer montre le désir à l’œuvre, et dans sa réitération établit une galerie clinique du désir. Convoquant le Pari de Pascal, dans deux films, il fait valoir la portée éthique de la rencontre dans l’amour.
L’amour, ignorance du désir
Authors: Hatat Brigitte
Published: April 2024

L’amour n’est-il que trompeur, masquant l’amour de soi derrière l’amour d’autrui, et la recherche de son propre bien sous couvert du bien de l’autre ? N’y a-t-il pas un vrai amour, un amour désintéressé qui ne serait pas d’essence narcissique et qui prendrait en compte la singularité de l’autre ? La psychanalyse ne promet-elle donc que le rabaissement, voire le ravalement de l’amour ?
La preuve de l’existence de Dieu dans la philosophie de Mullā Ṣadrā
Authors: Jambet Christian
Published: April 2024

Muḥammad ibn Ibrāhīm al-Shīrāzī, surnommé Mullā Ṣadrā, a construit, en Perse, au xvii e siècle, un système de la science métaphysique qui a pour sujet l’être et pour objet l’essence, les attributs et les actes de Dieu. On montre comment la théologie de l’essence et des attributs divins est déduite de la simple attestation de l’être. L’existence concrète étant pure nécessité, l’être nécessaire par soi est démontré par un syllogisme qui ne requiert aucun autre moyen terme. Le concept de l’intensité ou puissance de l’être permet de concevoir comment le principe de toute chose est immanent à l’ensemble des essences réelles tout en étant absolument transcendant. Le modèle théophanique du réel permet de concevoir l’unicité de l’Unique tout en préservant une métaphysique de l’émanation et du flux des multiplicités. Les attributs divins et leurs dérivés dans les degrés de l’étant permettent de penser l’intégralité des mondes spirituels et corporels.
Imagination et individualité de l’âme dans la philosophie d’Avicenne
Authors: Sebti Meryem
Published: April 2024

Avicenne propose une thèse étonnante, qui exercera une influence importante dans la philosophie post-avicennienne. Il affirme que certaines âmes conservent l’usage de leur imagination après la mort du corps, leur permettant ainsi de jouir d’une forme de survie imaginale. On s’interroge sur la fonction de l’imagination dans le processus d’individuation de l’âme humaine. Si elle est attestée, alors la doctrine qui soutient la survie de l’imagination après la mort du corps ne serait pas une thèse marginale, mais une doctrine importante de la psychologie avicennienne. La doctrine de la survie imaginale viendrait confirmer que l’activité de l’imagination est déterminante dans le processus qui conduit à l’individuation.