bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Gaya Kepemimpinan, Motivasi dan Stres Kerja Terhadap Kinerja Karyawan PT Enseval Putera Megatrading Tbk Cabang Batam
Authors: Ariyati Yannik
Published: February 2021

Objek penelitian berada di PT Enseval Putera Megatrading Tbk Cabang Batam. Yang berlaku sebagai variabel independen yaitu gaya kepemimpinan, motivasi dan stres kerja dan untuk variabel dependen yaitu kinerja karyawan. Penelitian yang di lakukan pada PT Enseval memiki tujuan yaitu untuk mengetahui atau menganalisis gaya kepemimpinan sebagai (X1), motivasi sebagai (X2) dan stres kerja sebagai (X3) terhadap kinerja karyawan (Y). Jumlah sampel yang di pakai dalam penelitian ini sebanyak 45 orang atau keseluruhan dari populasi karena jumlah populasi yang berada di PT Enseval ini adalah 45 orang. Tujuan dari analisis yang dilakukan untuk mengetahui dari variabel yang di teliti, peneitian ini mencakup uji validitas, uji reliabilitas, uji asumsi klasik, uji T, uji F dan analisis koefisien determinasi (R²). Nilai uji T gaya kepemimpinan berpengaruh secara signifikan terhadap kinerja karyawan, motivasi berpengaruh secara signifikan terhadap kinerja karyawan, dan stres kerja juga berpengaruh secara signifikan terhadap kinerja karyawan pada PT Enseval Putera Megarading Tbk Cabang Batam. Nilai yang didapat dari uji F menunjukan bahwa keseluruhan dari variabel independen yaitu gaya kepemimpinan, motivasi dan stress kerja mempunyai pengaruh yang positif dan signifikan terhadap kinerja karyawan dan nilai dari penelitian mengenai analisis koefisien determinasi (R²) di dapat kesimpulan variabel (X1), (X2), dan (X3) dalam mempengaruhi variabel Y dengan nilai 62,8% lalu untuk 37,2% lainnya adalah merupakan variabel yang tidak di teliti di penelitian ini. Untuk menjelaskan 37,2% menggunakan variabel lain untuk menelitinya
Faktor-Faktor yang Mempengaruhi Penerapan Keterlibatan Karyawan pada Industri Manufakturing
Authors: Nelson Alden
Published: February 2021

The research conducted to discuss the factors that affecting the implementation of employee engagement. Employee engagement contributes to companies where low turnover, high profitability and high productivity.

The results of the study explained the direct effect that leadership, teamwork, management support had a significant effect to employee motivation and employee development / training, environment / workplace, teamwork, management support, employee motivation directly influencing to employee engagement but performance management, compensation / remuneration leadership does not have a significant effect to employee engagement.

Indirect influence explains that leadership and team work have a significant effect to employee engagement through employee motivation but management support does not significantly influence employee engagement through employee motivation.
The Implementation of Family Centered Care in Postpartum Mothers
Authors: Guriti Guriti , Rosa Elsye Maria , Kurniawati Herlin Fitriana
Published: February 2021

Health service is a complex social implementation because it engages in services that involve various professional groups. In realizing a healthy paradigm, health services with a family approach are developed. The family approach is an approach that empowers the potential of the family in dealing with family health problems independently by paying attention to physical, biological, social, economic and cultural aspects, especially on the health and well-being of mothers, infants, toddlers, adolescents, PUS, and the elderly. The purpose of this study was to explore the implementation of family centered care by health workers in postpartum mothers. Method: This research was a qualitative research with a case study approach. Semi-structure interview was used to interview 12 informants. Results: Based on the thematic analysis of the results of in-depth interviews and processed with NVIVO 12 Plus, 3 (three) main themes were obtained which were supported by the categories explaining the implementation of family centered care by health workers in postpartum mothers. The first theme is the responses from health workers regarding the implementation and benefits of family centered care in health services for postpartum mothers which are supported by two sub-themes, namely; (a) the form and principles of implementing family centered care by hospitals according to health workers and (b) the benefits of family centered care according to the opinion of health workers. The second theme is the opinions of patients and families about the implementation of family centered care by health workers in postpartum mothers supported by two sub-themes, namely: (a) responses and (b) the benefits of family centered care. The third theme is the obstacles to the implementation of family centered care supported by two sub-themes, namely: (a) internal barriers and (b) external impacts. Conclusions: Overall, the implementation of family centered care by health workers in postpartum mothers had a good response from health workers, the patient and the patient's family.
Change in White Male Rats’ Weight and Epididimic Histology Due to the Provision of White Turmeric Extract and Fraction
Authors: Lamdayani Rinda , Aryanti Aryanti
Published: February 2021

The low participation of Men in the family planning program is due to the limited choice of male contraceptives that can be used. This makes experts trying to find a way that is safe for men, one way is to switch plants that can inhibit the spermatogenesis. One of the traditional medicines that has been studied and has anti-fertility effectiveness is the white turmeric plant. This study aimed to determine the effect of extracts and fraction of white turmeric on changes in weight and histology of white male rats (Rattus norvegicus) epididymis. This research was an experimental study using a completely randomized design (CRD). The samples in this study were 25 white male rats that met the inclusion criteria which were divided into 5 groups, each group consisting of 5 rats obtaining a dose of 300 mg/kgBW/day, treated for 48 days and stopped for surgery on the day 49. After that, the analysis was carried out using One Way Anova test and continued with Duncan's test. The provisions of extracts and fractions of white turmeric can reduce the weight and histological structure of the epididymis of the head, corpus, and cauda.
The Relationship Between Bullying Experience and Self-Concept among Adolescents
Authors: Hastuti Retno Yuli , Permatasari Devi , Rahmawati Sita Novia
Published: February 2021

Bullying is a situation where an abuse of power is committed by a person or group of people. Bullying behavior experienced by adolescents can result in teenage self-concept being disrupted so that it can result in self-withdrawn or inferior. The results of the study showed that 58.4% of adolescents had high bullying experiences and 41.6% of adolescents had moderate bullying experiences at Junior High School in 2019. The purpose of this study was to determine the relationship between bullying experiences and self-concept in adolescents at Junior High School. This research method used a non- experimental quantitative design with a descriptive-analytic design. The sampling technique used was purposive sampling with a total sample of 89 respondents. Data collection was carried out after the result of the screening from 5 classes matched the inclusion criteria. Data analysis was performed using Rank Spearmen correlation showed that the p-value was 0.000, which means that there was a relationship between bullying and self-concept in adolescents in Junior High School. This study concluded that there was a significant relationship between the experience of bullying and self-concept in adolescents of Junior High School.
Stress Management on Senior High School Students in Semarang
Authors: Rochmawati Dwi Heppy , Susanto Wigyo , Ellyawati Hetty Catur
Published: February 2021

Stress is a mental emotional disorder faced by a person due to pressure. Such pressure arises from the failure of individuals to fulfill their needs or wants. The pressure felt by someone can come from within or from outside of themselves. Individuals who experience stress need proper management, so as not to cause further harmful effects. One of the stress management method is by providing 5-finger technique therapy. The purpose of this study was to determine the effect of the 5-finger technique on the high school students’ stress level in Semarang. This study used a Quasi-Experiment Pretest-Posttest design without a control group. The instrument used was a 5-finger technique therapy worksheet, while the stress level was measured using the DASS-42 (Depression Anxiety Stress Scale). Approximately 90 respondents were chosen through simple random sampling and met the including criteria. The data analysis was conducted by using Mann Whitney statistical test, obtaining p-value <0.05 (0.00) was obtained with a decrease in the respondents’ stress level. The results showed that the 5-finger technique reduced the respondents’ stress level.
The Effect of Suture-Mediated Closure Device on Hemostasis in Patients after Transfemoral Cardiac Procedures - an Evidence-Based Practice
Authors: Akhmad Arif Nur , Liou Ching-I , Su Li-Wen , Alviana Fifi , Rahayu Candra Dewi
Published: February 2021

Patients who used manual compression after transfemoral cardiac procedures could suffer from several problems. The suture-mediated closure device may be proven as an effective alternative, offering earlier sheath removal, and potentially a reduction in vascular complications. The aim of this study was to discover empirical bases and clinical application of suture-mediated closure devices on hemostasis in patients after transfemoral cardiac procedures. This study was applied on evidence-based practice in the clinical setting. The search process for evidence-based practices used 3 databases such as MEDLINE, PubMed, and Web of Science, obtaining 14 studies published between 2000 and 2016. The studies selected were assessed by two reviewers for their methodological quality and level of evidence prior to inclusion in the review. Research subjects were patients at the age of ≥ 20 years old who suffered from coronary artery disease and required transfemoral cardiac procedures. This study was implemented in a Medical Intensive Care Unit, Changhua Christian Hospital. The hemostasis status was evaluated based on two categories of, bleeding or not bleeding. Six patients were included in this study. Most of the patients were male with average age of 69.33 ± 11.70 years old. Hypertension, diabetes mellitus, and hyperlipidemia were their common history of diseases. Based on the evaluation outcome, five patients showed hemostasis status and only one patient had bleeding after the compression procedures. This study concludes that the suture-mediated closure device is effective for patients after transfemoral cardiac procedures to reach hemostasis status quickly based on clinical evaluation.
Triangularity of nuclear arms control: Possible implications of China's involvement in nuclear arms talks
Authors: Savelyev Alexander
Published: February 2021

Beijing explains its firm unwillingness to join the United States and Russia in nuclear arms control talks by the fact that China’s nuclear arsenal is incomparable with respective potentials of the world’s two leading nuclear powers. China urges Russia and the U.S. to go ahead with the nuclear disarmament process on a bilateral basis, and promises it will be prepared to consider the possibility of its participation in the negotiations only when its counterparts have downgraded their arsenals approximately to China’s level. Washington finds this totally unacceptable and demands that China either join the existing Russian-U.S. strategic New START treaty right away or agree to enter into a trilateral nuclear arms control format. This article studies the prospects of China’s involvement in nuclear arms talks and analyzes the true reasons behind Beijing’s desire to avoid any nuclear disarmament deals at this point. The working hypothesis of this paper is that China’s stance on the above issue is by no means far-fetched or propagandistic, and that it is driven by fundamental political, military and strategic considerations. Disregard for this factor and further forceful efforts to bring China to the negotiating table to discuss nuclear arms control will lead to failure.
The ASEM Education Process: Implications for higher education internationalization in Malaysia
Authors: Munusamy M.Miandy , Hashim Azirah
Published: February 2021

The education process of the Asia-Europe Meeting (ASEM) has played an important role in higher education internationalisation since the establishment of ASEM in Bangkok, Thailand in 1996. The ASEM Education Process (AEP) consists of 53 ASEM partners and more than 15 ASEM education stakeholders who meet regularly for discussions on policies and reform measures. There are four priority areas and two transversal themes introduced in the AEP for policy direction and strategy implementation in the field of higher education. Malaysia has participated in the AEP since 2008 and has led and organised various initiatives and meetings on the internationalisation of higher education and global recognition. This study aims to explore the implications of the AEP for the process of internationalisation of higher education in Malaysia. A qualitative study with semi-structured interviews was conducted with fifteen senior officers of the Ministry of Higher Education, Malaysia and five Malaysian research universities. The data were analysed by employing the Qualitative Data Analysis software, the Nvivo version 11, to identify themes and categories. The findings reveal that the AEP can play a major role in internationalising Malaysian higher education through effective networking and strategic alliances. The four priority areas of the AEP has provided opportunities for Malaysia to work closely with European and Asian counterparts in the field of higher education. The findings can assist the Malaysian higher education stakeholder to participate actively in the inter-regional organisation to learn and share best practices and to formulate and revise policies on higher education internationalisation.
Diagnóstico de SARS-CoV-2: Importancia de entender los métodos actuales
Authors: Jaramillo-Valverde Luis
Published: February 2021

Actualmente, tanto en el Perú como en otros países, tenemos una gran oferta de pruebas disponibles para la identificación de individuos contagiados con la enfermedad de COVID-19; sin embargo, ¿conocemos cuáles son las ventajas y limitaciones de cada una ellas?
Estado nutricional y nivel de hemoglobina según el tipo de lactancia en el lactante de 6 meses
Authors: Buitron Martel Esperanza Luz
Published: February 2021

Objetivo. Determinar la relación entre el estado nutricional y el nivel de hemoglobina; el tipo de lactancia y el estado nutricional; el tipo de lactancia y el nivel de hemoglobina del lactante de 6 meses que acudieron al control CRED del Centro de Salud Perú-Corea, Huánuco, 2019. Métodos. Fue un estudio con enfoque cuantitativo, de tipo retrospectivo, analítico y transversal. La población muestral fueron 564 historias clínicas de lactantes de 6 meses. La comprobación de hipótesis fue mediante la prueba chi cuadrado de independencia, considerando un p ≤ 0,05. Resultados. Evaluando el tipo de lactancia que consumen los lactantes de 6 meses, se evidenció que el 65,6 % (370) continuaron con lactancia materna exclusiva, frente a un 25,7 % (145) con lactancia mixta. El estado nutricional fue normal en mayor proporción [99,1 % (559)]. El nivel de hemoglobina también, fue mayoritariamente normal [98,9 % (558)]. Se halló relación entre el estado nutricional y el nivel de hemoglobina [(x 2 = 488,13; p = 0,000)], la lactancia materna exclusiva y el estado nutricional normal [(x 2 = 25,55; p = 0,006)] y lactancia materna exclusiva y un nivel normal de hemoglobina [(x 2 = 30,71; p = 0,000)]. Conclusiones. Existe relación entre el estado nutricional normal y el nivel normal de la hemoglobina, la  lactancia materna exclusiva y el estado nutricional normal; asimismo, se halló relación entre la lactancia materna exclusiva y el nivel normal de hemoglobina de los lactantes.
¿Podría ser la diabetes factor de riesgo para cáncer de pene?: a propósito de un caso
Authors: Diaz-Meyzan Lesly , Diaz Lazo Anibal
Published: February 2021

El cáncer de pene es raro y afecta con mayor frecuencia a hombres mayores de edad. Reportamos el caso de un paciente varón con antecedente de tuberculosis y que, asimismo, padece diabetes mellitus (DM), quien presento cáncer a células escamosas de pene, siendo sometido a tratamiento quirúrgico satisfactorio. El artículo tiene el propósito de mostrar la posible relación entre la diabetes y el cáncer de pene, siendo esta una neoplasia infrecuente en la zona. Sin embargo, es recomendable tenerlo presente para hacer un diagnóstico precoz y tratamiento oportuno.
FEATURES OF THE REALIZATION OF THE CSR PRINCIPLE BY RUSSIAN COMPANIES AT THE MODERN STAGE
Authors: Lemeshko E. Yu. , Panina S. R.
Published: February 2021

The paper considers the principle of corporate social responsibility, studies features and problems of the realization of the principle in Russia. Conclusions are made about the need to implement the CSR principle at the modern stage
THE IMPORTANCE OF FINANCIAL RESULTS IN MAKING MANAGEMENT DECISIONS
Authors: Vakhrusheva O. B. , Neshcheret V. A.
Published: February 2021

The paper considers the importance of financial results in management activities
CURRENT PROBLEMS IN TAXATION OF TOWN-FORMING FISHERY ORGANIZATIONS
Authors: Mironova I. B. , Chernova M. A.
Published: February 2021

The paper defines problems leading to an irrational increase in the tax burden and makes specific proposals for a number of taxes in order to remedy the situation, in accordance with the analysis of regulations in the field of taxation of fishery organizations
IMPLEMENTATION RESULTS OF THE NATIONAL PROJECT «INTERNATIONAL COOPERATION AND EXPORT» IN THE KHABAROVSK KRAI
Authors: Sidorenko O. V.
Published: February 2021

As part of the implementation of the national project «International cooperation and export» in order to assess the effectiveness of the regional authorities to create conditions to stimulate non-resource exports in the Khabarovsk Territory, the results of the implementation of the regional export standard were assessed. It was found that during the analyzed period, there are negative structural changes in the commodity structure of the region's exports and the region has not formed a strategic vision for the development of export activities
ESTIMATION OF THE FPV RESIDENTS’ CONTRIBUTION TO
SOCIO-ECONOMIC DEVELOPMENT OF THE FAR EAST REGION
Authors: Balikaeva Y. V.
Published: February 2021

This article is all about assessment of the FPV residents' contribution to development of named region. Despite the fact that the FPV is one of mechanisms of public stimulus for the socio-economic development of the Far East, providing a business support package, currently it doesn't have a significant impact on the regional development. The actual performance of residents' activity does not meet the planned results
CONSUMER PROTECTION AND ITS IMPACT ON INTERNATIONAL LOGISTICS
Authors: Port M. S.
Published: February 2021

The paper considers the basic rights of consumers who purchase goods and services (the right to information, the right to safety and proper quality of purchased goods and services, the right to compensation for damages and judicial protection, the right to exchange goods or return them), and also reflects their impact on the functional areas of international logistics
CUSTOMS ADMINISTRATIONS IN A GLOBALIZING WORLD:
NEED FOR INTERACTION
Authors: Smirnov V. P.
Published: February 2021

The Instability and uncertainty of the globalizing world is growing. The area of agreements and positive changes in these conditions is the customs sphere. The development of national customs administrations should be based on the expansion and deepening of their positive cooperation with each other and with other structures
MIGRATION AND ITS IMPACT ON TERRORIST AND EXTREMIST THREATS
Authors: Antonova E. Yu.
Published: February 2021

The paper examines the relationship between migration (legal and illegal) and terrorist and extremist threats. The conclusions about the need to improve not only the impact of legal measures against those who violate immigration and other laws, but also to strengthen border control and migration registration
INTEGRATION OF SUPPLIER DISTRIBUTION TO THE GOVERNMENT PROCUREMENT
Authors: Andrianova N. V. , Telkov E. A.
Published: February 2021

The article is devoted to the analysis of the problem, connected with the integration of supplier's distribution to the government procurement to cross the barrier between supplier, e-government platforms, contracting authorities and to increase organization's effectiveness of each participant and of the whole government procurement
Photoionization Models for High-density Gas
Authors: Kallman T. , Bautista M. , Deprince J. , García J. A. , Mendoza C. , Ogorzalek A. , Palmeri P. , Quinet P.
Published: February 2021

Relativistically broadened and redshifted 6.4–6.9 keV iron K lines are observed from many accretion powered objects, including X-ray binaries and active galactic nuclei. The existence of gas close to the central engine implies large radiation intensities and correspondingly large gas densities if the gas is to remain partially ionized. Simple estimates indicate that high gas densities are needed to allow for the survival of iron against ionization. These are high enough that rates for many atomic processes are affected by mechanisms related to interactions with nearby ions and electrons. Radiation intensities are high enough that stimulated processes can be important. Most models currently in use for interpreting relativistic lines use atomic rate coefficients designed for use at low densities and neglect stimulated processes. In our work so far we have presented atomic structure calculations with the goal of providing physically appropriate models at densities consistent with line-emitting gas near compact objects. In this paper we apply these rates to photoionization calculations, and produce ionization balance curves and X-ray emissivities and opacities that are appropriate for high densities and high radiation intensities. The final step in our program will be presented in a subsequent paper in which model atmosphere calculations will incorporate these rates into synthetic spectra.
Toward a Bias-free Selection Criterion in Shear Measurement
Authors: Li Hekun , Zhang Jun , Liu Dezi , Luo Wentao , Zhang Jiajun , Dong Fuyu , Shen Zhi , Wang Haoran
Published: February 2021

Sample selection is a necessary preparation for weak lensing measurement. It is well-known that selection itself may introduce bias to the measured shear signal. Using image simulation and the Fourier_Quad shear measurement pipeline, we quantify the selection bias in various commonly used selection criteria (signal-to-noise ratio, magnitude, etc.). We propose a new selection criterion defined in the power spectrum of the galaxy image. This new selection criterion has a low selection bias, and it is particularly convenient for shear measurement pipelines based on Fourier transformation.
The Magnetic Environment of a Stealth Coronal Mass Ejection
Authors: O’Kane Jennifer , Mac Cormack Cecilia , Mandrini Cristina H. , Démoulin Pascal , Green Lucie M. , Long David M. , Valori Gherardo
Published: February 2021

Interest in stealth coronal mass ejections (CMEs) is increasing due to their relatively high occurrence rate and space weather impact. However, typical CME signatures such as extreme-ultraviolet dimmings and post-eruptive arcades are hard to identify and require extensive image processing techniques. These weak observational signatures mean that little is currently understood about the physics of these events. We present an extensive study of the magnetic field configuration in which the stealth CME of 2011 March 3 occurred. Three distinct episodes of flare ribbon formation are observed in the stealth CME source active region (AR). Two occurred prior to the eruption and suggest the occurrence of magnetic reconnection that builds the structure that will become eruptive. The third occurs in a time close to the eruption of a cavity that is observed in STEREO-B 171 Å data; this subsequently becomes part of the propagating CME observed in coronagraph data. We use both local (Cartesian) and global (spherical) models of the coronal magnetic field, which are complemented and verified by the observational analysis. We find evidence of a coronal null point, with field lines computed from its neighborhood connecting the stealth CME source region to two ARs in the northern hemisphere. We conclude that reconnection at the null point aids the eruption of the stealth CME by removing the field that acted to stabilize the preeruptive structure. This stealth CME, despite its weak signatures, has the main characteristics of other CMEs, and its eruption is driven by similar mechanisms.
Two-dimensional Particle-in-cell Simulations of Axisymmetric Black Hole Magnetospheres
Authors: Hirotani Kouichi , Krasnopolsky Ruben , Shang 尚 Hsien 賢 , Nishikawa Ken-ichi , Watson Michael
Published: February 2021

We investigate the temporal evolution of an axisymmetric magnetosphere around a rapidly rotating stellar-mass black hole by applying a two-dimensional particle-in-cell simulation scheme. Adopting homogeneous pair production and assuming that the mass accretion rate is much less than the Eddington limit, we find that the black hole’s rotational energy is preferentially extracted from the middle latitudes and that this outward energy flux exhibits an enhancement that lasts approximately 160 dynamical timescales. It is demonstrated that the magnetohydrodynamic approximations cannot be justified in such a magnetically dominated magnetosphere because Ohm’s law completely breaks down and the charge-separated electron–positron plasmas are highly nonneutral. An implication is given regarding the collimation of relativistic jets.
The Red Supergiant Binary Fraction as a Function of Metallicity in M31 and M33
Authors: Neugent Kathryn F.
Published: February 2021

Recent work measuring the binary fraction of evolved red supergiants (RSGs) in the Magellanic Clouds points to a value between 15% and 30%, with the majority of the companions being unevolved B-type stars as dictated by stellar evolution. Here I extend this research to the Local Group galaxies M31 and M33 and investigate the RSG binary fraction as a function of metallicity. Recent near-IR photometric surveys of M31 and M33 have led to the identification of a complete sample of RSGs down to a limiting

. To determine the binary fraction of these M31 and M33 RSGs, I used a combination of newly obtained spectroscopy to identify single RSGs and RSG+OB binaries, as well as archival UV, visible, and near-IR photometry to probabilistically classify RSGs as either single or binary based on their colors. I then adjusted the observed RSG+OB binary fraction to account for observational biases. The resulting RSG binary fraction in M33 shows a strong dependence on galactocentric distance, with the inner regions having a much higher binary fraction (

) than the outer regions (

). Such a trend is not seen in M31; instead, the binary fraction in lightly reddened regions remains constant at

. I conclude that the changing RSG binary fraction in M33 is due to a metallicity dependence, with higher-metallicity environments having higher RSG binary fractions. This dependence most likely stems not from changes in the physical properties of RSGs due to metallicity but from changes in the parent distribution of OB binaries.
Observational Evidence for Enhanced Black Hole Accretion in Giant Elliptical Galaxies
Authors: McDonald Michael , McNamara Brian R. , Calzadilla Michael S. , Chen Chien-Ting , Gaspari Massimo , Hickox Ryan C. , Kara Erin , Korchagin Ilia
Published: February 2021

We present a study of the relationship between black hole accretion rate (BHAR) and star formation rate (SFR) in a sample of giant elliptical galaxies. These galaxies, which live at the centers of galaxy groups and clusters, have star formation and black hole activity that is primarily fueled by gas condensing out of the hot intracluster medium. For a sample of 46 galaxies spanning five orders of magnitude in BHAR and SFR, we find a mean ratio of

, independent of the methodology used to constrain both SFR and BHAR. This ratio is significantly higher than most previously published values for field galaxies. We investigate whether these high BHAR/SFR ratios are driven by high BHAR, low SFR, or a different accretion efficiency in radio galaxies. The data suggest that the high BHAR/SFR ratios are primarily driven by boosted black hole accretion in spheroidal galaxies compared to their disk counterparts. We propose that the angular momentum of the cool gas is the primary driver in suppressing BHAR in lower-mass galaxies, with massive galaxies accreting gas that has condensed out of the hot phase on nearly radial trajectories. Additionally, we demonstrate that the relationship between specific BHAR and SFR (sBHAR and sSFR) has much less scatter over six orders of magnitude in both parameters, due to competing dependence on morphology between the M
BH–M
* and BHAR–SFR relations. In general, active galaxies selected by typical techniques have sBHAR/sSFR ∼ 10, while galactic nuclei with no clear AGN signatures have sBHAR/sSFR ∼ 1, consistent with a universal M
BH–M
spheroid relation.
Revisiting the Complex Kinematics of Ionized Gas at the Central Region of NGC 1068: Evidence of an Additional Active Galactic Nucleus?
Authors: Shin Jaejin , Woo Jong-Hak , Kim Minjin , Wang Junfeng
Published: February 2021

We present a spatially resolved analysis of ionized gas at the nuclear region of the nearby galaxy NGC 1068. While NGC 1068 has been known to have gas outflows driven by its active galactic nucleus (AGN), more complex kinematical signatures were recently reported, which were inconsistent with rotation or simple biconical outflows. To account for the nature of gas kinematics, we performed a spatially resolved kinematical study, finding a morphologically symmetric pair of approaching and receding gas blobs in the northeast region. The midpoint of the two blobs is located at a distance of 180 pc from the nucleus in the projected plane. The ionized gas at the midpoint shows zero velocity and high velocity dispersion, which are characteristics of an outflow-launching position, as the two sides of a bicone, i.e., approaching and receding outflows are superposed on the line of sight, leading to no velocity shift but high velocity dispersion. We investigate the potential scenario of an additional AGN based on a multiwavelength data set. While there are other possibilities, i.e., X-ray binary or supernova shock, the results from optical spectropolarimetry analysis are consistent with the presence of an additional AGN, which likely originates from a minor merger.
Gravitational Collider Physics via Pulsar–Black Hole Binaries
Authors: Ding Qianhang , Tong Xi , Wang Yi
Published: February 2021

We propose to use pulsar–black hole binaries as a probe of gravitational collider physics. Induced by the gravitation of the pulsar, the atomic transitions of the boson cloud around the black hole backreact on the orbital motion. This leads to the deviation of the binary period decrease from that predicted by general relativity, which can be directly probed by the Rømer delay of pulsar times of arrival. The sensitivity and accuracy of this approach are estimated for two typical atomic transitions. It is shown that once the transitions happen within the observable window, the pulsar-timing accuracy is almost always sufficient to capture the resonance phenomenon.
Tidal Disruption Event Hosts Are Green and Centrally Concentrated: Signatures of a Post-merger System
Authors: Hammerstein Erica , Gezari Suvi , van Velzen Sjoert , Cenko S. Bradley , Roth Nathaniel , Ward Charlotte , Frederick Sara , Hung Tiara , Graham Matthew , Foley Ryan J. , Bellm Eric C. , Cannella Christopher , Drake Andrew J. , Kupfer Thomas , Laher Russ R. , Mahabal Ashish A. , Masci Frank J. , Riddle Reed , Rojas-Bravo César , Smith Roger
Published: February 2021

We study the properties of the galaxies hosting the first 19 tidal disruption events (TDEs) detected with the Zwicky Transient Facility (ZTF) within the context of a carefully constructed, representative host galaxy sample. We find that the ZTF sample of TDE hosts is dominated by compact “green valley” galaxies. After we restrict the comparison sample to galaxies with a similar concentration, as measured by the Sérsic index, we find this green valley overrepresentation is even larger. That is, concentrated red sequence galaxies are not producing TDEs at elevated levels. We present host galaxy spectra that show that E + A galaxies are overrepresented in the ZTF sample by a factor of ≈22, which is lower than previous TDE host galaxy studies have found. We find that this overrepresentation can be fully accounted for when taking into account the masses, colors, and Sérsic indices of the ZTF TDE hosts. The combination of both green colors and high Sérsic index of the typical TDE host galaxy could be explained if the TDE rate is temporarily enhanced following a merger that leads to a higher central concentration of stars.
Parker Solar Probe Observations of Alfvénic Waves and Ion-cyclotron Waves in a Small-scale Flux Rope
Authors: Shi Chen , Zhao Jinsong , Huang Jia , Wang Tieyan , Wu Dejin , Chen Yu , Hu Qiang , Kasper Justin C. , Bale Stuart D.
Published: February 2021

Small-scale flux ropes (SFRs) are common in the interplanetary environment. However, previous identification procedures generally discard SFRs with medium and high Alfvénicity, which are thought to be Alfvénic waves or Alfvénic structures. This paper first identifies an SFR event with medium Alfvénicity in the inner heliosphere (at ∼0.2 au) using Parker Solar Probe measurements. We find Alfvénic waves that arise inside SFR based on high correlations between the magnetic field and velocity fluctuations. We also observe quasi-monochromatic electromagnetic waves with frequencies f that are usually larger than the local proton cyclotron frequency at the leading and trailing edges of this SFR. These waves are well explained by the outward-propagating ion-cyclotron waves, which have wave frequencies ∼0.03–0.3 Hz and wavelengths ∼60–2000 km in the plasma frame. Moreover, we show that the power spectral density of the magnetic field in SFR middle region follows the power-law distribution, where the spectral index changes from −1.5 (f ≲ 1 Hz) to −3.3 (f ≳ 1 Hz). These findings would motivate developing an automated program to identify SFRs with medium and high Alfvénicity from Alfvénic waves/structures.
Lyα Irradiation of Superhydrogenated Coronene Films: Implications for H2 Formation
Authors: Mennella V. , Suhasaria T. , Hornekær L. , Thrower J. D. , Mulas G.
Published: February 2021

We present the results of an experimental study of the interaction of Lyα photons with superhydrogenated coronene films. The effects of ultraviolet (UV) irradiation have been analyzed with infrared spectroscopy. The spectral changes provide evidence for UV photodestruction of the C–D bonds of the superhydrogenated coronene with a cross section of 8 ± 2 × 10−20 cm2. The comparison of our experimental result with the prediction from theoretical modeling suggests an extension of the region inside photodissociation regions where superhydrogenated coronene can survive and contribute to H2 formation. H2 formation through abstraction in superhydrogenated coronene dominates over direct H2 loss induced by UV photodestruction.
NICER Discovery of Millisecond X-Ray Pulsations and an Ultracompact Orbit in IGR J17494-3030
Authors: Ng Mason , Ray Paul S. , Bult Peter , Chakrabarty Deepto , Jaisawal Gaurava K. , Malacaria Christian , Altamirano Diego , Arzoumanian Zaven , Gendreau Keith C. , Güver Tolga , Kerr Matthew , Strohmayer Tod E. , Wadiasingh Zorawar , Wolff Michael T.
Published: February 2021

We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494−3030 in 2020 October/November. The system is an accreting millisecond X-ray pulsar in a 75-minute ultracompact binary. The mass donor is most likely a ≃0.02 M
⊙ finite-entropy white dwarf composed of He or C/O. The fractional rms pulsed amplitude is 7.4%, and the soft (1–3 keV) X-ray pulse profile contains a significant second harmonic. The pulsed amplitude and pulse phase lag (relative to our mean timing model) are energy dependent, each having a local maximum at 4 and 1.5 keV, respectively. We also recovered the X-ray pulsations in archival 2012 XMM-Newton observations, allowing us to measure a long-term pulsar spin-down rate of

Hz s−1 and to infer a pulsar surface dipole magnetic field strength of ≃109 G. We show that the mass transfer in the binary is likely nonconservative, and we discuss various scenarios for mass loss from the system.
A PARAMETRIC STUDY OF THE ENERGY EFFICIENCY OF EXISTING AIR-CONDITIONED BUILDINGS IN KUWAIT
Authors: Kulaib Aboelyazied , Kalendar Abdulrahim , Hussain Shafqat , Alhendal Yousuf
Published: February 2021

In Kuwait air-conditioning systems consume approximately 70% of the grid energy during the long summer months. In this paper, various practical approaches are investigated to enhance the energy efficiency and decrease the energy consumption of five existing air-conditioned (AC) buildings in Kuwait City. The process of energy management in air-conditioned buildings in Kuwait is overwhelming due to high energy consumption in the building sector. This study proposed an optimization technique for the proper energy management of installed AC systems to target energy-efficient buildings. In this study the aim is to explore the effect of different operating parameters, both theoretically and experimentally, and to contribute to the reduction of AC energy consumption. Consequently, the relationship between the thermal load in the air-conditioned buildings and the actual electrical energy consumption is determined, and remedial measures, along with different recommendations for energy saving, are presented. The actual thermal loads of each selected building were calculated and compared with the installed cooling capacity of the AC systems. From the results obtained it was concluded that, by implementing the suggested remedial measures, the predicted load in the selected buildings could be decreased significantly from the existing installed capacity of the cooling systems. Most of the remedial measures suggested for energy management lead to a reduction in power consumption and increased energy efficiency at different levels based on the specifications of the buildings considered and the AC systems installed, resulting in improved in economy, a reduced carbon footprint, and a cleaner environment.
Hyspanus Diecus Roderico, un aperçu des lettres échangées entre le chancelier de Castille et l’archevêque de Tolède (ca. 1218)
Authors: Arizaleta Amaia
Published: February 2021

On présente ici l’étude d’un dossier épistolaire constitué par des lettres échangées, au début du xiiie siècle, entre Diego García, ancien chancelier du roi de Castille, et Rodrigo Jiménez de Rada, primat des Espagnes. Il s’agira, en attendant de mieux connaître le contexte spécifique d’écriture de ces textes, d’appréhender la disposition et l’entrelacement de leurs éléments constitutifs. Cette ébauche d’étude littéraire inscrit ces lettres tolédanes dans les pratiques internationales de l’ars dictaminis, et situe plus précisément Diego, Rodrigo et d’autres clercs lettrés hispaniques dans le paysage de la culture scolaire occidentale des xiie et xiiie siècles.
Pierre de Dreux, dit Mauclerc, serait-il lʼauteur de Tydorel ?
Authors: Maréchal Chantal A.
Published: February 2021

Comme l’annonce son titre, cet essai a pour objet d’attribuer à Pierre de Dreux, dit Mauclerc, la composition du lai de Tydorel. Notre démonstration s’appuiera sur une analyse des choix thématiques et formels qui ont façonné le poème et des aspirations politiques et esthétiques du trouvère et duc consort de Bretagne. Nous montrerons d’abord avec quel talent le poète a exploité et transformé ses sources pour séduire et manipuler son audience et traduire une aventure courtoise en message politique de nature généalogique. La mise en lumière du phénomène d’« éternel retour » sur lequel repose l’économie du lai nous conduira ensuite à identifier sa destinataire comme étant Alice, duchesse de Bretagne. Enfin, la perfection avec laquelle se confondent la source vive des mots et la force vitale qui a modelé l’existence de Pierre de Dreux, dit Mauclerc, nous encouragera à reconnaître en lui l’auteur de Tydorel.
Yvain, le seigneur des anneaux
Authors: Vincensini Jean-Jacques
Published: February 2021

Cet article s’attache à faire d’Yvain, un incontestable seigneur… des anneaux. Dans Le Chevalier au lion, ces objets ne sont pas des détails insignifiants ou merveilleux. Après avoir jeté un œil sur l’anneau du célébrissime Bilbon le Hobbit, on mettra les « détails » considérés à leur place en regardant, tout d’abord, comment les romans de Chrétien de Troyes ont permis la dissociation progressive de l’histoire et du roman et la diffusion de valeurs comme l’affirmation des énergies viriles et la séduction fabuleuse de la femme. Le Chevalier au lion en est un excellent témoignage. Car ces nouvelles valeurs y trouvent une surprenante expression grâce à l’association des bagues considérées à une autre figure cruciale du récit, le sang. Dialoguant avec le livre d’Alain Boureau Théologie, Science et Censure au xiiie siècle consacré au saignement accusateur, on mettra au jour le système symbolique serré et riche de sens qui convainc de l’existence d’une véritable raison des fictions.
Le portail royal du Mans et l’évolution de la première sculpture gothique entre les façades de Dijon et de Chartres
Authors: Angheben Marcello
Published: February 2021

Le portail royal de la cathédrale du Mans a généralement été considéré comme une œuvre exécutée après la façade de la cathédrale de Chartres par des artistes moins talentueux que leurs prédécesseurs. L’analyse iconographique et formelle montre cependant qu’il s’inspire avant tout de la sculpture bourguignonne et plus particulièrement du portail disparu de Saint-Bénigne de Dijon. Depuis les premières années du xiie siècle, les portails de cette région ont accueilli des théophanies atemporelles dérivées de l’Ascension intégrant des composantes semblables ou identiques à celles du Mans et évoquant peut-être la liturgie eucharistique. Quant au portail de Dijon, il partage avec celui du Mans l’essentiel de la structure et du décor des ébrasements – la disposition des statues-colonnes, la présence des saints Pierre et Paul, les chapiteaux des colonnettes, le décor animalier –, auxquels s’ajoutent les arcades architecturées encadrant les personnages du linteau, un cycle de l’Enfance accordant au Massacre des Innocents une place exceptionnelle et les anges thuriféraires. Enfin, plusieurs traits formels dont les vêtements du Christ et des statues-colonnes plaqués sur les fonds trahissent une certaine permanence des formes romanes. La majorité des composantes suggère par conséquent une chronologie relative dans laquelle le portail du Mans s’inscrirait entre la façade de Dijon et celle de Chartres.
Muzlemita, mozlemes, muzlemía : usages et désuétude de quelques arabismes dans la chrétienté ibérique au Moyen Âge
Authors: Gallon Florian
Published: February 2021

Dans la documentation chrétienne du Moyen Âge, les termes dérivés de l’arabe muslim, propres à désigner les musulmans, sont restés fort peu usités. On en trouve toutefois, dans la péninsule Ibérique du milieu du ixe siècle au début du xiie siècle, une concentration remarquable qui n’a guère attiré l’attention des historiens. Cette étude vise d’abord à en comprendre l’origine et la diffusion. Il en ressort que les occurrences de ces arabismes, passés à la langue romane et au latin, procèdent généralement d’une familiarité directe ou indirecte avec la langue arabe. On dégage ensuite les représentations véhiculées par les textes où apparaissent ces vocables, qui oscillent entre neutralité et considérations positives à l’égard des musulmans. À l’inverse, les mêmes mots peuvent être employés pour disqualifier des chrétiens dévoyés par leur proximité avec l’islam. Pour finir, on s’interroge sur les raisons pour lesquelles ces termes entrèrent en désuétude à partir du xiie siècle.
Accumulation, capitalisme et politique : vers une approche intégrée
Authors: Ansaloni Matthieu , Montalban Matthieu , Roger Antoine , Smith Andy
Published: February 2021

Cet article a pour ambition de (re)mettre au premier plan la question de l’accumulation dans ses rapports à la et au politique, montrant que l’une ne peut se penser sans les autres. Après avoir rappelé en quoi les problématiques marxistes et institutionnalistes originelles impliquaient de facto d’appréhender la relation entre ces termes, nous essayerons de montrer comment le couplage entre théorie de la régulation et théorie des champs permet une saisie empirique fine des structures politiques de l’accumulation.
Crowdfunding
Authors: Moretti Francesca
Published: February 2021

Thanks to the spread of internet technologies, there has recently been a significant upsurge of innovative forms of human cooperation. In an ecosystem characterized by unsteadiness and parceled relations, crowdfunding has quickly become one of the most popular expression of the new wave of the sharing economy philosophies. Although it is undeniable that the success of crowdfunding has increased during a dramatic financial period, characterized by a wide-ranging credit crunch, we can't interpret this phenomenon just as a fade or as a side effect of the economic crisis. However, through a multidisciplinary approach of analysis and through a qualitative explorative research it will be possible to observe what type of solidarity this system is currently promoting.
Crowdfunding
Authors: Hassen Majdi , Ouertatani Ibtissem
Published: February 2021

In this chapter, the research deals with NGOs and their current weight in state's development and public conditions improvement. The researcher also goes to connect the financial challenging faced by NGOs and how the use of crowdfunding platform is important specifically to solicit funding to start, continue, and expand its works. The chapter will highlight the crowdfunding models suitable for NGOs specifically crowdfunding and NGOs in developing countries with describing crowdfunding policies and regulations. Through that, the researcher helps in shaping best practices based on NGO success stories. This chapter will also review previous studies and statistics as a guide for the researcher to present crowdfunding as a tool for the non-profit sector.
Ergonomic Criteria Based Material Handling Equipment Selection
Authors: Efe Burak
Published: February 2021

Material handling refers to the processes of loading materials onto a material handling equipment, moving from one location to another location with the help of material handling equipment, and unloading the material from the transportation equipment to the relevant location. Non-ergonomic material handling equipment for the employee causes the increment of cycle time that does not add value to the product during transportation within the enterprise. The increase in cycle time causes an increase in fatigue and inefficiency in the employee. This study evaluates five material handling equipment based on eight ergonomic criteria by using interval type-2 fuzzy TOPSIS method. Interval type-2 fuzzy number provides to examine the fuzziness and the uncertainty more accurately than type-1 fuzzy number, which handles only one crisp membership degree. The opinions of experts are aggregated by employing interval type-2 fuzzy number operators.