bluuebunny/crossref_metadata_2025 huggingface dataset:
Nasyru al-Jaridah li Tarqiyati Maharah al-Kitabah fi Dar al-Lughah al-Arabiyyah wa al-Fiqh as-Salafii bi Ma’hadi an-Nuqayah Lati Sumenep Madura
Authors: Afandi Afandi
Published: April 2021

The implementation of the newspaper publishing process requires to compose 'learning and continuous practice, in order to produce a correct writing according to Arabic rules. At first, the majority of Dalfis students found a difficult to write Arabic, whether it was in the form of information in the Dalfis Arabic newspaper, because there was a lack of learning to write Arabic by Dalfis only once a week. The purposes of the research are as follows: 1. To determine the process of implementation of Arabic newspaper publishing activities in supporting writing skills. 2. To find out the weaknesses in the process of publishing Arabic newspapers in improving writing skills. 3. To find out the factors that influence the publication of Arabic newspapers. The research method, researchers used a descriptive approach by using data collection methods, interview, observation and documentation. Research result In the Arabic language newspaper publishing activities did not run optimally, due to the lack of explanations given by the teacher to the students. The teacher only gives a few titles to students and asked them to write down without giving detailed guidance. Thus it need for good management in Arabic newspaper publishing activities in order  it can improve students' skills in writing Arabic. The Weaknesses in activities of publishing Arabic newspapers includes the lack of references related to Arabic such as Arabic magazines, contemporary dictionaries and other one. Thus Dalfis should equip the Arabic language facilities and infrastructure in in order the students are able to read and have a writing skills. The factors influencing the publication of Arabic newspapers are internal factors, namely the lack of explanation given by the teacher about the rules of writing in Arabic, thus the teachers must increase their teaching competence, so that students can understand optimally. Meanwhile, external factors, namely the culture of speaking Arabic among Dalfis students for 24 hours both inside the Dalfis complex and outside.
Semiotika dalam Lirik Lagu Kun Anta oleh Humood Al-Khuder
Authors: Yadiyanti Dita Permata
Published: April 2021

In this research "Semiotics in Kun Anta's Song Lyrics popularized by Humood Al-Khuder" uses a qualitative method, with a corpus of Arabic song lyrics Kun Anta. The purpose of this research is to find out the form of phrases or sentences that contain semiotic meanings in the song lyrics, and to find out the deeper meanings contained therein.The theory used is Charles Sanders Pierce's semiotic theory in which Pierce categorizes the triangle of meaning theory which consists of three main elements, namely, signs, objects, and interpretants. In this study too, the researcher concluded that the lyrics of the kun anta song have deep meaning from the semiotic aspect so that lessons can be learned from the song lyrics
BEYNƏLXALQ İNVESTİSİYALAR FƏNNİNİN PROQRAMI
Authors:   DES, Professor, Hajizadeh Elshan
Published: April 2021

Azərbaycan Respublikası Təhsil Nazirliyinin Elmi-Metodik Şurasının “İqtisadiyyat” bölməsinin 13.03.2006-cı il tarixli iclasının qərarı ilə təsdiq edilmişdir (protokol №4). Azərbaycan Dövlət İqtisad Universitetinin Tədris-Metodiki Şurasının 06.10.2016-cı il tarixli qərarı ilə çapa tövsiyyə edilmişdir. (protokol №1).
Pilot project as a format for determining the effectiveness of implementation mechanisms of innovative medical and economic standards for secondary prevention and health promotion
Authors: Zabolotny Dmitry I. , Samohodskiy Viktor M. , Ponomarenko N.V.
Published: April 2021

Relevance: Due to the fact that secondary prevention and dispensary treatment have been almost reduced in Ukraine during the last years a set of innovative medical and economic standards is suggested for their renewal and improvement; their implementation should be tested firstly by means of a field experiment.
Objective: To prove the effectiveness of scientifically based organizational and economic standards of criteria and regulations in the process of improving the health of the population in the area of responsibility of the family physician using diagnostic and treatment management within the "Pilot Project" in the three levels of health care areas of the district.
Material and Methods: Since the algorithm of the complex of medical and economic standards for secondary prevention and dispensary treatment were developed on the basis of one service – otorhinolaryngology, and the positive effect of health improvement should be achieved for all medical specialties during the preparatory phase, using the goal prognosis method, a team of medical professionals will retrospectively analyze a significant number of histories of various diseases at the tertiary level in the healthcare institution to differentiate these diseases into clinical-statistical groups, diagnosis related groups and their degree of complexity, as it is already done for ENT diseases, which will enable using appropriate software and recommended formulae to calculate quantitative and qualitative indicators of the amount of medical work to determine the level of work load, its cost, and
personal attainment coefficient of each physician.
Results: Use of our standards, criteria and guidelines in the process of pilot project makes it possible of the basis of timing to determine the standard and over normative volumes of medical work, indicators of which by certain calculations are transformed into a mechanism lor determining the working load of the doctors, Its cost, which allows differentiate deciding the level of their material incentives, i.e. those technological divisions, which are essential to create a system of our national insurance medicine.
TITIK TEMU ISLAM NUSANTARA BERKEMAJUAN DALAM PERSPEKTIF FENOMENOLOGI EDMUND HUSSERL (1859 – 1938)
Authors: Arif Al Wasim
Published: April 2021

Dinamika wacana keislaman di Indonesia berkembang seiring perkembangan wacana keilmuan. Kajian keislaman dan penafsiran ajaran agama memunculkan wacana-wacana baru keislaman, di antaranya wacana Islam Nusantara dan Islam Berkemajuan. Sementara itu, fenomenologi yang digagas dan dikembangkan oleh Edmund Husserl (1859 – 1938) menempatkan objek penelitian dalam sudut pandang pengamat, di mana  pengamat dituntut untuk menangguhkan dan mengurungkan penilaian-penilaian subjektif. Sehingga pengamat dapat memperoleh gambaran yang lebih objektif dan apa adanya terhadap objek yang dikaji. Wacana Islam Nusantara menawarkan nuansa keislaman dengan mengakomodasi kearifan lokal, sementara Islam berkemajuan menawarkan nuansa keislaman yang lebih modern dan progresif. Dengan pendekatan fenomenologis wacana Islam Nusantara dan Islam Berkemajuan menemukan titik temunya. Nuansa Islam Nusantara Berkemajuan membawa nuansa Islam yang progresif dengan tetap berpegang pada kearifan lokal keIndonesiaan.
Kinayah Wa Ta'ridl al-Qur'an (Kajian Pemikiran Imam Zarkasyi)
Authors: Tajul Muluk
Published: April 2021

Konteks Arab sebagai realitas sosio-historis makro dalam proses turunnya al-Qur’an tentu mempengaruhi gaya bahasa al-Qur’an. Sebab al-Qur’an dalam fase pewahyuan merupakan respon lansung bagi komunitas Arab dalam lokus yang sangat spesifik. Karenanya, menurut sebagian kalangan, gaya bahasa al Qur’an sedikit banyak dipengaruhi oleh bahasa dan tradisi sya’ir yang berkembang di Arab saat itu. Namun demikian, mayoritas sarjana ulum al Qur’an tidak sepakat dengan hal itu, menurut mereka, nilai bahasa al-Qur’an jauh melampaui bahasa para penya’ir dan ahli sastra Arab saat itu. Kinayah dan ta’ridl, misalnya, merupakan keunikan gaya bahasa dan komunikasi yang dimiliki al-Qur’an dan diyakini mengandung aspek i’jaz.
Progresifitas Pemikiran Hadis Muhammad al-Gazali
Authors: Arif Nuh Safri
Published: April 2021

Hadith as the second source of law in Islam, always will continue to get the spotlight or study that develops according to the times. Although the hadith is seen as the second source of law, the position of hadith is still very central in shaping the religious understanding of a particular person or group. It can even surpass the portion of the Qur’an as the main and principal source. This sides of the Hadith are regarded as explanations or details of the Qur’an. With such a very central position, then the study of hadith also experienced the development. For example, the development of Muhammad al-Ghazali. In this case, he tries to progressive in understanding the hadith, so what he does is not uncommon to get censured, and sharp criticism. This progressiveness he did with the aim of shaping the understanding of traditions that more adjust the times, or the demands of the international world. So that the teachings of Islam are considered highly relevant to the development of the times. Through this article, the author tries to explain how the pregresivitas thought of Muhammad al-Ghazali. The thought of al-Ghazali is based on personal anxiety and an awareness of the history and reality that is afflicting Muslims and Islamic countries that are always under the control and control of Western nations. How the thoughts and solutions offered by al-Ghazali in understanding hadith is necessary to be studied, so that the understanding of hadith in contemporary times is more significant and relevant to modern social conditions.
Tribological Behavior of a Thermoplastic Material Under the Action of a Conic Penetrator in Sliding Movement
Authors: Petre Ivona Camelia , Stoian Elena Valentina , Enescu Maria Cristiana
Published: April 2021

Knowing how to deform the Turcite thermoplastic material under the action of conical penetrators is a means of obtaining information on the processing of the counterpart (made from a metal material with higher hardness) with which it comes into contact.The paper aims to theoretically determine the depth of penetration of the thermoplastic material under the action of some conical penetrators and to establish the coefficient of static and kinetic friction under the action of these penetrators. The proposed model will be validated experimentally on a tribological stand made for this purpose.
Study of Chemical Composition and Some Material Properties for a Hybrid Resin Based on Dammar
Authors: Georgeanu Vlad Alexandru , Stanescu Marius Marinel , Bolcu Dumitru , Ciuca Ion , Bogdan Mihaela , Sabo Anca Alexandra Iordache
Published: April 2021

The chemical composition of a hybrid resin made of natural Dammar resin and epoxy resin (along with the related hardener), in proportion of volume of 60 and 40%, respectively, was studied based on EDS analysis. The results of the study are presented in this paper. The presence of epoxy resin was necessary to generate a rapid polymerization process. The material details of the hybrid resin were investigated using SEM. A high-resolution image of a hybrid resin sample was obtained. The weight loss of the hybrid resin at certain temperature values using thermo gravimetric analysis was measured. In addition, the surface roughness of the hybrid resin was characterized using two methods. By the first method, the classical one, the roughness was measured using two profile parameters and five analysis lines, namely the functional dependence between the roughness height and the gray level of the analyzed surface image. By the second method, the average roughness method, the surface texture of a hybrid resin specimen was measured and the roughness profile was obtained as the difference between the primary profile and the middle line of the filter determined with the Gaussian profile filter. Finally, several possible areas of use of this type of resin have been proposed based on the properties obtained.
Effect of 1,4-Naphthalenedicarboxylic Acid Derivative on Crystallization and Performances of Poly(L-lactide)
Authors: Zhao Lisha , Qiao Jun , Shan Xueling , Cai Yanhua , Zhang Jie
Published: April 2021

In this work, biodegradable Poly(L-lactide) (PLLA) was modified through adding a new organic additive N, N -bis(benzoyl) 1, 4-naphthalenedicarboxylic acid dihydrazide (NABH). A comparison on crystallization of the pure PLLA and PLLA/NABH revealed that the NABH as effective heterogeneous nucleation sites enhanced PLLA𠏋 crystallization, and an increase of NABH loading was able to further accelerate crystallization rate of PLLA; whereas a faster cooling rate was not conducive to PLLA𠏋 crystallization, but the appearance of obvious crystallization peak upon cooling at 30şC/min confirmed the advanced enhancing role of NABH for PLLA crystallization again. The investigation on influence of the final melting temperature on the crystallization behavior of PLLA showed that the 170 şC was optimum final melting temperature for enhancing crystallization, even the onset crystallization temperature of PLLA/NABH were higher than 150şC. The melting processes of PLLA/NABH after different crystallization not only could reflect the previous crystallization, but also depended on crystallization temperature and heating rate. Thermal decomposition results showed that the existence of NABH slightly weakened thermal stability of PLLA, and the maximum difference in onset thermal decomposition temperature was only 9.4şC comparing with the pure PLLA. However, the presence of NABH in PLLA matrix seriously weakened optical property.
Gamification as a Strategy for Enhancing Participation in e-Learning Environments
Authors: Almalhy Khalid
Published: April 2021

The study aimed to explore the effects of a proposed gamification strategy in eLearning environments through integrating roles of school community members (school principal, educational supervisor, teacher, student, and parent) in order to improve their levels of participation in eLearning. A mixed methods research approach was used: Quantitative data were collected by means of a questionnaire distributed to a sample of 41 faculty members specializing in educational technology in Saudi public universities, while qualitative data were collected through interviews with eight experts in the same field. The results showed that all factors had a medium impact, except for the impact of student performance on teacher performance, which showed the highest average impact, and the impact of student performance on the performance of the school principal, which showed the lowest average impact. Additionally, the results of the interviews were discussed as interpretation of the quantitative data, which confirmed—from the points of view of both the experts and the questionnaire recipients—the effectiveness of the proposed gamification strategy in improving the level of participation of all school community members. Based on the results, the study recommended the use of the proposed gamification strategy.
Examining the prevalence of complex PTSD in an inpatient DBT service for females with a primary diagnosis of EUPD
Authors: Morris Deborah , Webb Elanor Lucy , Holmes Jessica , Reynolds Katharine , Head Michele , Lunn Amy , Canterbury Rachel , McAllister Peter , Dionelis Karolos , Kamath Sanjith ,   St Andrew’s Healthcare, UK,   St Andrew’s Healthcare, UK,   St Andrew’s Healthcare, UK,   St Andrew’s Healthcare and Oxford Health NHS Trust, UK,   St Andrew’s Healthcare, UK
Published: April 2021

In response to differential clinical presentations of survivors of multiple or chronic exposure to trauma, complex post-traumatic stress disorder (CPTSD) has been included in the 11th revision of the International Classification of Diseases (ICD-11). A growing body of research has explored the prevalence of CPTSD in a range of populations, yet its prevalence in adults diagnosed with Emotionally Unstable Personality Disorder (EUPD) has been subject to limited evaluation, including in individuals requiring specialist inpatient care. The International Trauma Questionnaire (ITQ) was administered to 42 females with primary diagnoses of EUPD admitted to a specialist DBT service. Twenty-eight (66.8%) participants met full diagnostic criteria for either PTSD (11.9%, n=5) or CPTSD (54.8%, n=23). Additionally, PTSD and CPTSD symptomatology were highly prevalent in participants who did not meet the functional impairment criteria. Significant differences in the prevalence of CPTSD were found, dependent on whether a measure of functional impairment was included. This is the first study to explore the prevalence of CPTSD in an inpatient EUPD sample, using diagnostic thresholds. The findings highlight the importance of attending to trauma as well as EUPD-related needs. Theoretical, clinical and future research implications are discussed.
Implicit learning of temporal behavior in complex dynamic environments
Authors: Salet Josh M. , Kruijne Wouter , van Rijn Hedderik
Published: April 2021

Humans can automatically detect and learn to exploit repeated aspects (regularities) of the environment. Timing research suggests that such learning is not only used to anticipate what will happen, but also when it will happen. However, in timing experiments, the intervals to be timed are presented in isolation from other stimuli and explicitly cued, contrasting with naturalistic environments in which intervals are embedded in a constant stream of events and individuals are hardly aware of them. It is unclear whether laboratory findings from timing research translate to a more ecologically valid, implicit environment. Here we show in a game-like experiment, specifically designed to measure naturalistic behavior, that participants implicitly use regular intervals to anticipate future events, even when these intervals are constantly interrupted by irregular yet behaviorally relevant events. This finding extends previous research by showing that individuals not only detect such regularities but can also use this knowledge to decide when to act in a complex environment. Furthermore, this finding demonstrates that this type of learning can occur independently from the ordinal sequence of motor actions, which contrasts this work with earlier motor learning studies. Taken together, our results demonstrate that regularities in the time between events are implicitly monitored and used to predict and act on what happens when, thereby showing that laboratory findings from timing research can generalize to naturalistic environments. Additionally, with the development of our game-like experiment, we demonstrate an approach to test cognitive theories in less controlled, ecologically more valid environments.
It’s in your hands: How variable perception affects grasping estimates in virtual reality
Authors: Readman Megan Rose , Cooper Dalton , Linkenauger Sally A.
Published: April 2021

Successful interaction within one’s environment is contingent upon one’s ability to accurately perceive the extent over which actions can be performed, referred to as action boundaries. As our possibilities for action are subject to variability, it is necessary for individuals to be able to update their perceived action boundaries to accommodate for variance. While research has shown that individuals can update their action boundaries to accommodate for variability, it is unclear how the perceptual system calibrates to this variance to inform our action boundaries. This study investigated the influence of perceptual motor variability by analysing the effect of random and systematic variability on perceived grasp ability in virtual reality. Participants estimated grasp ability following perceptual-motor experience with a constricted, normal, extended, or variable grasp. In Experiment 1, participants experienced all three grasping abilities (constricted, normal, extended) 33% of the time. In Experiment 2 participants experienced the constricted and normal grasps 25% of the time, and the extended grasp 50% of the time. The results indicated that when perceptual-motor feedback is inconsistent, the perceptual system disregards the frequency of perceptual-motor experience with the different action capabilities and considers each action capability experienced as a type, and subsequently calibrates to the average action boundary experienced by type.
Tracking stress via the computer mouse? Promises and challenges of a potential behavioral stress marker
Authors: Freihaut Paul , Göritz Anja S. , Rockstroh Christoph , Blum Johannes
Published: April 2021

Computer mouse tracking offers a simple and cost-efficient way to gather continuous behavioral data and has mostly been utilized in psychological science to study cognitive processes. The present study extends the potential applicability of computer mouse tracking and investigates the feasibility of using computer mouse tracking for stress measurement. Drawing on first empirical results and theoretical considerations, we hypothesized that stress affects sensorimotor processes involved in mouse usage. To explore the relationship between stress and computer mouse usage, we conducted a between-participant field experiment in which N = 994 participants worked on four mouse tasks in a high-stress or low-stress condition. In the manipulation check, participants reported different stress levels between the two conditions. However, frequentist and machine learning data analysis approaches did not reveal a clear and systematic relationship between mouse usage and stress. These findings challenge the feasibility of using straightforward computer mouse tracking for generalized stress measurement.
Frequency of restrictive pulmonary function tests in patients with chronic Hepatitis C
Authors: Hamid Shahid , Khalid  , Fawad  , Asia Firdous
Published: April 2021

Hepatis C infection is a common health problem world wide and is the major cause of chronic liver disease in Pakistan. Common complications of chronic hepatitis c infection are cirrhosis, ascities and hepatocellular carcinoma. Also HCV infection is associated with several extra hepatic manifestations including interstitial lung fibrosis. It has been found that frequency of pulmonary fibrosis is increased in patients with cirrhosis of liver as the stage of cirrhosis advances.This lung fibrosis can cause restrictive pattern of pulmonary function tests. This study was conducted to determine frequency of restrictive pulmonary function in patients with different stages of chronic hepatitis C  infection, based on child pough classification.
Study design
This is descriptive case study
Method
99 patients of age range 20 to 80 year, both males and females having chronic hepatitis C infection and interferon based treatment naïve patients were included from outpatient and inpatient department were selected. Patients were divided into three groups according to child’s criteria i.e. group A, group B, and group C. Pulmonary function tests were performed on patients in all three groups to look for  FEV1/FVC ratio in all patients. FEV1/FVC ratio  more than 80 was considered as restrictive pulmonary function.
Results
Out of 99 patients 32(35%) were found to have restrictive pattern of pulmonary functions
Conclusion
Chronic hepatitis C infection is associated with restrictive pattern of pulmonary function, suggestive of pulmonary fibrosis.
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. IV. The Star Formation History of Andromeda VII Derived from Long-period Variable Stars
Authors: Navabi Mahdieh , Saremi Elham , Javadi Atefeh , Noori Majedeh , van Loon Jacco Th. , Khosroshahi Habib G. , McDonald Iain , Alizadeh Mina , Danesh Arash , Gozaliasl Ghassem , Molaeinezhad Alireza , Parto Tahere , Raouf Mojtaba
Published: April 2021

We have examined the star formation history (SFH) of Andromeda VII (And VII), the brightest and most massive dwarf spheroidal (dSph) satellite of the Andromeda galaxy (M31). Although M31 is surrounded by several dSph companions with old stellar populations and low metallicity, it has a metal-rich stellar halo with an age of 6–8 Gyr. This indicates that any evolutionary association between the stellar halo of M31 and its dSph system is frail. Therefore, the question is whether And VII (a high-metallicity dSph located ∼220 kpc from M31) can be associated with M31's young, metal-rich halo. Here we perform the first reconstruction of the SFH of And VII employing long-period variable (LPV) stars. As the most evolved asymptotic giant branch and red supergiant stars, the birth mass of LPVs can be determined by connecting their near-infrared photometry to theoretical evolutionary tracks. We found 55 LPV candidates within two half-light radii, using multiepoch imaging with the Isaac Newton Telescope in the i and V bands. Based on their birth mass function, the star formation rate (SFR) of And VII was obtained as a function of cosmic time. The main epoch of star formation occurred ≃ 6.2 Gyr ago with an SFR of 0.006 ± 0.002 M
⊙ yr−1. Over the past 6 Gyr, we find slow star formation, which continued until 500 Myr ago with an SFR ∼ 0.0005 ± 0.0002 M
⊙ yr−1. We determined And VII’s stellar mass M = (13.3 ± 5.3) × 106
M
⊙ within a half-light radius

and metallicity Z = 0.0007, and we also derived its distance modulus of μ = 24.38 mag.
Gas-phase Metallicity as a Diagnostic of the Drivers of Star Formation on Different Spatial Scales
Authors: Wang Enci , Lilly Simon J.
Published: April 2021

We examine the correlations of star formation rate (SFR) and gas-phase metallicity Z. We first predict how the SFR, cold gas mass, and Z will change with variations in inflow rate or in star formation efficiency (SFE) in a simple gas-regulator framework. The changes

SFR and

are found to be negatively (positively) correlated when driving the gas regulator with time-varying inflow rate (SFE). We then study the correlation of

sSFR (specific SFR) and

(O/H) from observations, at both ∼100 pc and galactic scales, based on two two-dimensional spectroscopic surveys with different spatial resolutions, MAD and MaNGA. After taking out the overall mass and radial dependences, which may reflect changes in inflow gas metallicity and/or outflow mass loading, we find that

sSFR and

(O/H) on galactic scales are found to be negatively correlated, but

sSFR and

(O/H) are positively correlated on ∼100 pc scales within galaxies. If we assume that the variations across the population reflect temporal variations in individual objects, we conclude that variations in the SFR are primarily driven by time-varying inflow at galactic scales and driven by time-varying SFE at ∼100 pc scales. We build a theoretical framework to understand the correlation between SFR, gas mass, and metallicity, as well as their variability, which potentially uncovers the relevant physical processes of star formation at different scales.
RELICS: Properties of z ≥ 5.5 Galaxies Inferred from Spitzer and Hubble Imaging, Including A Candidate z ∼ 6.8 Strong [O iii] emitter
Authors: Strait Victoria , Bradač Maruša , Coe Dan , Lemaux Brian C. , Carnall Adam C. , Bradley Larry , Pelliccia Debora , Sharon Keren , Zitrin Adi , Acebron Ana , Neufeld Chloe , Andrade-Santos Felipe , Avila Roberto J. , Frye Brenda L. , Mahler Guillaume , Nonino Mario , Ogaz Sara , Oguri Masamune , Ouchi Masami , Paterno-Mahler Rachel , Stark Daniel P. , Mainali Ramesh , Oesch Pascal A. , Trenti Michele , Carrasco Daniela , Dawson William A. , Jones Christine , Umetsu Keiichi , Vulcani Benedetta
Published: April 2021

We present constraints on the physical properties (including stellar mass, age, and star formation rate) of 207 6 ≲ z ≲ 8 galaxy candidates from the Reionization Lensing Cluster Survey (RELICS) and Spitzer-RELICS surveys. We measure photometry using T-PHOT and perform spectral energy distribution fitting using EAzY and BAGPIPES. Of the 207 candidates for which we could successfully measure (or place limits on) Spitzer fluxes, 23 were demoted to likely z < 4. Among the high-z candidates, we find intrinsic stellar masses between 1 × 106
M
⊙ and 4 × 109
M
⊙, and rest-frame UV absolute magnitudes between −22.6 and −14.5 mag. While our sample is mostly comprised of

L

m
UV

/

L

m
UV

*

<
1

galaxies, it extends to

L

m
UV

/

L

m
UV

*

∼
2

. Our sample spans ∼4 orders of magnitude in stellar mass and star formation rates, and exhibits ages that range from maximally young to maximally old. We highlight 11 z ≥ 6.5 galaxies with detections in Spitzer/IRAC imaging, several of which show evidence for some combination of evolved stellar populations, large contributions of nebular emission lines, and/or dust. Among these is PLCKG287+32-2013, one of the brightest z ∼ 7 candidates known (AB mag 24.9 at 1.6 μm) with a Spitzer 3.6 μm flux excess suggesting strong [O iii] + H-β emission (∼1000 Å rest-frame equivalent width). We discuss the possible uses and limits of our sample and present a public catalog of Hubble + Spitzer photometry along with physical property estimates for all objects in the sample. Because of their apparent brightnesses, high redshifts, and variety of stellar populations, these objects are excellent targets for follow-up with the James Webb Space Telescope.
Census of R Coronae Borealis Stars. I. Infrared Light Curves from Palomar Gattini IR
Authors: Karambelkar Viraj R. , Kasliwal Mansi M. , Tisserand Patrick , De Kishalay , Anand Shreya , Ashley Michael C. B. , Delacroix Alex , Hankins Matthew , Jencson Jacob E. , Lau Ryan M. , McKenna Dan , Moore Anna , Ofek Eran O. , Smith Roger M. , Soria Roberto , Soon Jamie , Tinyanont Samaporn , Travouillon Tony , Yao Yuhan
Published: April 2021

We are undertaking the first systematic infrared (IR) census of R Coronae Borealis (RCB) stars in the Milky Way, beginning with IR light curves from the Palomar Gattini IR (PGIR) survey. The PGIR is a 30 cm J-band telescope with a 25 deg2 camera that is surveying 18,000 deg2 of the northern sky (δ > −28°) at a cadence of 2 days. We present PGIR light curves for 922 RCB candidates selected from a mid-IR color-based catalog. Of these 922, 149 are promising RCB candidates, as they show pulsations or declines similar to RCB stars. The majority of the candidates that are not RCB stars are either long-period variables (LPVs) or RV Tauri stars. We identify IR color-based criteria to better distinguish between RCB stars and LPVs. As part of a pilot spectroscopic run, we obtain NIR spectra for 26 of the 149 promising candidates and spectroscopically confirm 11 new RCB stars. We detect strong He i
λ10830 features in the spectra of all RCB stars, likely originating within high-velocity (200–400 km s−1) winds in their atmospheres. Nine of these RCB stars show 12C16O and 12C18O molecular absorption features, suggesting that they are formed through a white dwarf merger. We detect quasiperiodic pulsations in the light curves of five RCB stars. The periods range between 30 and 125 days and likely originate from the strange-mode instability in these stars. Our pilot run results motivate a dedicated IR spectroscopic campaign to classify all RCB candidates.
Molecular Gas Distribution Perpendicular to the Galactic Plane
Authors: Su Yang , Yang Ji , Yan Qing-Zeng , Zhang Shaobo , Wang Hongchi , Sun Yan , Chen Zhiwei , Wang Chen , Zhou Xin , Chen Xuepeng , Jiang Zhibo , Wang Min
Published: April 2021

We use the ∼370 deg2 data from the MWISP CO survey to study the vertical distribution of the molecular clouds (MCs) toward the tangent points in the region of l = [+16°, +52°] and ∣b∣ < 5.°1. We find that the molecular disk consists of two components with a layer thickness (FWHM) of ∼85 pc and ∼280 pc, respectively. In the inner Galaxy, the molecular mass in the thin disk is dominant, while the molecular mass traced by the discrete MCs with weak CO emission in the thick disk is probably ≲10% of the whole molecular disk. For the CO gas in the thick disk, we identified 1055 high-z MCs that are ≳100 pc from the Galactic plane. However, only a few samples (i.e., 32 MCs or 3%) are located in the ∣z∣ ≳ 360 pc region. Typically, the discrete MCs of the thick-disk population have a median peak temperature of 2.1 K, a median velocity dispersion of 0.8 km s−1, and a median effective radius of 2.5 pc. Assuming a constant value of X
CO = 2 × 1020 cm−2(K km s−1)−1, the median surface density of these MCs is 6.8 M
⊙ pc−2, indicating very faint CO emission for the high-z gas. The cloud–cloud velocity dispersion is 4.9 ± 1.3 km s−1 and a linear variation with a slope of ∼−0.4 km s−1 kpc−1 is obtained in the region of R
GC = 2.2–6.4 kpc. Assuming that these clouds are supported by their turbulent motions against the gravitational pull of the disk, a model of ρ
0(R) = 1.28 M
⊙ pc−3

can be used to describe the distribution of the total mass density in the Galactic midplane.
Cepheids with Giant Companions. I. Revealing a Numerous Population of Double-lined Binary Cepheids*
†
Authors: Pilecki Bogumił , Pietrzyński Grzegorz , Anderson Richard I. , Gieren Wolfgang , Taormina Mónica , Narloch Weronika , Evans Nancy R. , Storm Jesper
Published: April 2021

Masses of classical Cepheids of 3–11 M
⊙ are predicted by theory but those measured clump between 3.6–5 M
⊙. As a result, their mass–luminosity relation is poorly constrained, impeding our understanding of basic stellar physics and the Leavitt Law. All Cepheid masses come from the analysis of 11 binary systems, including only five that are double lined and well suited for accurate dynamical mass determination. We present a project to analyze a new, numerous group of Cepheids in double-lined binary (SB2) systems to provide mass determinations in a wide mass interval and study their evolution. We analyze a sample of 41 candidate binary LMC Cepheids spread along the P–L relation, which are likely accompanied by luminous red giants, and present indirect and direct indicators of their binarity. In a spectroscopic study of a subsample of 18 brightest candidates, for 16 we detected lines of two components in the spectra, already quadrupling the number of Cepheids in SB2 systems. Observations of the whole sample may thus lead to quadrupling all the Cepheid mass estimates available now. For the majority of our candidates, erratic intrinsic period changes dominate over the light-travel-time effect due to binarity. However, the latter may explain the periodic phase modulation for four Cepheids. Our project paves the way for future accurate dynamical mass determinations of Cepheids in the LMC, Milky Way, and other galaxies, which will potentially increase the number of known Cepheid masses even 10-fold, hugely improving our knowledge about these important stars.
KVL and KCL verification by cotton conductive yarn resistor instead of carbon resistor fixation with Ag nanoparticles for sustainable e-textiles application
Authors: Hasan Redwanul , Islam Minhazul , Hossain Sazid
Published: April 2021

This paper parades the effectiveness of conductive yarn resistor instead of carbon resistor by verifying the Kirchhoff’s voltage (KVL) & current (KCL) law. This research work enlightens about the sustainability of e-textiles on account of presenting characteristics of this conductive yarn resistor. Resistor is one of the most useful materials in the electrical laboratories. Generally resistor is made by carbon. Using carbon resistor is pernicious for our environment, society & cost. It is known that sustainability is the concerned area at present. Sustainable e-textile is one of the major need in material science .This quest indicates that point to boggle sustainable e-textile by inventing conductive yarn resistor verifying with most orthodox theory of Kirchhoff’s voltage & current laws. KVL and KCL are the most prominent theory in electrical science. Summation of KVL and KCL will be zero in any closed loop in this theory. The summation of KVL is also zero here and summation of KCL is also zero here. It can justify Kirchoff’s KVL & KCL theory.
Effect of mechanical treatment type on the strength of undoped single crystal indium antimonide wafers
Authors: Kormilitsina Svetlana S. , Molodtsova Elena V. , Knyzev Stanislav N. , Kozlov Roman Yu. , Zavrazhin Dmitry A. , Zharikova Elena V. , Syrov Yuri V.
Published: April 2021

Thin (100) wafers of single crystal undoped InSb have been strength tested by plane transverse bending. The strength of the wafers (≤ 800 mm in thickness) has been shown to depend on their mechanical treatment type. If the full mechanical treatment cycle is used (grinding + chemical polishing) the strength of the InSb wafers increases twofold (from 3.0 to 6.4 kg/mm2). We show that the strength dependence on mechanical treatment type for (100) wafers is similar to that for (111) wafers, the strength of (111) wafers being 2 times higher. The roughness of the thin wafers after the full mechanical treatment cycle has been measured using contact profilometry. After the full mechanical treatment cycle the roughness of the InSb wafers Ra decreases from 0.6 to 0.04 mm leading to general surface smoothening. We have compared the strength and roughness between (100) InSb and GaAs wafers. The roughness of InSb and GaAs wafers after the full mechanical treatment cycle decreases significantly: by 10 times for InSb due to the general surface smoothening and by 3 times for GaAs (Rz from 2.4 to 0.8 mm) due to a reduction of the peak roughness component. The full mechanical treatment cycle increases the strength of InSb wafers by removing damaged layers through the sequence of operations and reducing the risk of mechanical damage development.
Effect of sintering temperature on dielectric properties of barium titanate ceramics and composite
Authors: Malyshkina Olga V. , Shishkov Gregory S. , Martyanov Andrey A. , Ivanova Alexandra I.
Published: April 2021

The structure and dielectric properties of barium titanate ceramics samples sintered at 1100, 1150, 1200, 1250 and 1350 °C have been compared with the dielectric properties of 80 vol.% barium titanate + 20 vol.% barium ferrite composite samples sintered at 1150, 1200 and 1250 °C. It has been shown that polarization sufficient for existence of the piezoelectric effect is only achieved in barium titanate samples sintered at 1250 and 1350 °C. Furthermore the pyroelectric coefficient and reversal polarization of these samples are far higher than those of samples sintered at lower temperatures. Analysis of the sample structures has confirmed that the dielectric properties of barium titanate ceramics depend on grain size and therefore on sintering temperature. Based on the experimental results we have selected the optimum sintering temperature for 80 vol.% barium titanate + 20 vol.% barium ferrite composite to be 1250 °С. Further increase in sintering temperature to 1300 °C showed that this composite has a eutectic. The temperature dependence of the permittivity of the barium titanate / barium ferrite composite sintered at 1250 °С is similar to that of BaTiO3 ceramics samples sintered at 1350 °С. The room temperature permittivity of the composite samples also proves to be far higher than that of barium titanate ceramics samples sintered at the same temperatures. Barium ferrite addition to barium titanate increases the permittivity of the composite and also diffuses the ferroelectric phase transition and shifts the permittivity maximum temperature by 10 °C towards higher temperatures.
Morphological and genetic differentiation in the anguid lizard Pseudopus apodus supports the existence of an endemic subspecies in the Levant
Authors: Jablonski Daniel , Ribeiro-Júnior Marco Antônio , Meiri Shai , Maza Erez , Kukushkin Oleg V. , Chirikova Marina , Pirosová Angelika , Jelić Dušan , Mikulíček Peter , Jandzik David
Published: April 2021

The Levant represents one of the most important reptile diversity hotspots and centers of endemism in the Western Palearctic. The region harbored numerous taxa in glacial refugia during the Pleistocene climatic oscillations. Due to the hostile arid conditions in the warmer periods they were not always able to spread or come into contact with populations from more distant regions. One large and conspicuous member of the Levantine herpetofauna is the legless anguid lizardPseudopus apodus. This species is distributed from the Balkans to Central Asia with a portion of its range running along the eastern Mediterranean coast. Mitochondrial and nuclear DNA sequences, microsatellite genotypes, and morphology show that populations in this region differ from the two named subspecies and presumably had a long independent evolutionary history during the Quaternary. Here we describe the Levantine population as a new subspecies and present biogeographic scenarios for its origin and diversification. The new subspecies is genetically highly diverse, and it forms a sister lineage toPseudopusfrom the remaining parts of the range according to mtDNA. It is the largest-bodied of the three subspecies, but occupies the smallest range.
First record of the genus Arria (Mantodea, Haaniidae, Arriini) from Thailand, with the description of a new species of moss-dwelling praying mantis
Authors: Unnahachote Thornthan , Shcherbakov Evgeny , Pinkaew Nantasak
Published: April 2021

Arria muscoamicta Unnahachote & Shcherbakov, sp. nov. is described based on a male from central Thailand. This is the first record of Arria Stål, 1877 from the country. The new species is closely allied to A. leigongshanensis (Ge & Shen, 2008) from China, differing by the absence of prozonal tubercles, the elongated pronotum, nine tibial anteroventral spines, and the truncated hindwings. The new species is a moss-camouflaging mantis living at high altitude. The taxonomic problems of the genus are briefly discussed.
A new genus and species of Mileewini leafhoppers (Hemiptera, Cicadellidae, Mileewinae) from China, with a key to genera
Authors: Yan Bin , He Hong-Li , Yang Mao-Fa , Webb Mick D.
Published: April 2021

A new leafhopper genus and species, Anzihelus bistriatus Yan & Yang, gen. nov. sp. nov. (Cicadellidae, Mileewinae, Mileewini) is described from Sichuan Province, China. Habitus images and figures of the male and female genitalia are provided together with a key to the genera of Mileewini from China.
Integrative taxonomy uncovers a new stygobiotic Caridina species (Decapoda, Caridea, Atyidae) from Guizhou Province, China
Authors: Feng Shuo , Chen Qing-Hua , Guo Zhao-Liang
Published: April 2021

Collecting much-needed information on the taxonomy, distribution, and ecology of cave-dwelling shrimp is vital for addressing the urgent challenges in conservation biodiversity in fragile cave ecosystems.Caridina incolorsp. nov., a new atyid shrimp from an underground stream of Yaoshui Cave, Daqikong scenic area, Libo County, Guizhou Province, southwestern China is described based on morphology and DNA analysis (mitochondrial COI).Caridina incolorsp. nov.differs from epigean congeners by its smaller eyes which range from reduced to completely blind; colorless body and appendages; long stylocerite and sixth abdominal segment; and relatively large eggs. In comparison to other cave species,Caridina incolorsp. nov.presents a long rostrum and stylocerite; slender sixth abdominal segment; and unique shape of the appendix masculina. Data on the habitat, ecology, and levels of threat are provided and suggest that it should be categorized as Critically Endangered (CR) under the current IUCN criteria.
Remote Sensing and GIS for Modelling Green Roofs Potential at Different Urban Scales
Authors: Santos Teresa , Silva Caio , Tenedório José António , Montenegro Góes Thiago
Published: April 2021

Urban greening is an essential dimension of sustainable urban development. Through green planning, cities can develop strategies towards climate change and mitigation actions and reduce emissions. This chapter aims to evaluate the combined use of remote sensing data and GIS to produce different levels of sustainable indicators, starting from the city level to the neighborhood and the building levels. Green roofs can be part of the solution through the ecosystem services provided. Its benefits are evaluated for the different urban scales through scenario analysis. The impact in the outdoor thermal comfort is assessed at the neighborhood level, while the overall potential to improve energy efficiency is evaluated at the building level. The methodology is implemented in the city of Lisbon, Portugal through a pilot case study. The results can provide rationales for the city when formulating new incentives to encourage the uptake of green roofs in Lisbon.
Accuracy of UAV-Based Digital Elevation Models
Authors: Soto-Estrada Engelberth , Wellens Ann , Pava-Restrepo Andrés , Hernández Mejía Camilo
Published: April 2021

UAV photogrammetry has simplified the measurement of the terrain's surface; however, the accuracy of the method is still a matter of research as it depends on multiple factors such as the UAV employed and the decisions made by the user during information acquisition and processing. This chapter analyses the accuracy of 27 digital elevation models (DEMs) built from the data acquired with a DJI Phantom 3 drone, which was flown at different heights and trajectories in a case study in the Colombian Department of Antioquia. The statistical analysis confirmed that the use of ground control points (GCPs) is fundamental to increase the accuracy of the map products. It also showed that accuracy, understood as the comparison between the coordinates of points measured in the field (CPs) with their corresponding values estimated in the orthophotomosaics, depends on the number of CPs and their location. An insufficient number of CPs or an inadequate distribution, for instance all or most of them located in a single land cover, will cause the accuracy to be overestimated.
Body Armor for the Mind
Authors: Sullivan Michael Donald
Published: April 2021

This chapter looks at the often overlooked yet vitally important steps of mental preparation for first responders, emergency and disaster management personnel, and command center staffs. This chapter will delve into the importance of using simulations and exercises to focus on the mental well-being of our responders to prevent future incidents of post-traumatic stress disorder and other health issues. The past 19 years of war against terrorism starting with the attacks on 9/11 coupled with the recent outbreak of COVID-19 has brought to the forefront the necessity to mentally prepare our warriors, our first responders, and our medical personnel to operate effectively in the toxic environment of a disaster or emergency. This chapter aims to help build that awareness and facilitate planning.
Gaming and Simulation in Public Education
Authors: Kupietz Kevin Daniel
Published: April 2021

Public education is an important component of providing for the safety of individuals and communities. Although it is often not given the resources seen by response units, a good public education program can and does save lives. A good program empowers people to help themselves and their neighbors in times of need until help from professional responders can arrive. This chapter will examine the important role that gaming and simulation currently plays in teaching the public and will lay out ideas on how it can be used for better and more efficient training programs in the future.
Rapid Play Digital Games for Emergency Management Instruction
Authors: Seater Robert M.
Published: April 2021

Rapid play digital games—games playable in minutes and therefore amenable to repetition and iteration—can be an effective tool for instruction when properly developed and employed. If improperly developed, they can also hide good lessons amongst irrelevant complexities or, worse, implicitly reinforce incorrect lessons. This chapter describes eight broadly applicable techniques and five specialized templates for avoiding common pitfalls. It demonstrates those methods on a simple example serving as an amalgam of such games the author's research lab has created for government agencies.