bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Kebutuhan LKPD Penunjang Model PBL untuk Meningkatkan Kemampuan Pemecahan Masalah Matematika Siswa
Authors: Widoarti Nurlita , Suparman Suparman
Published: March 2022

The skills that students must have in solving a problem are mathematical problem solving skills. This is important in the Industrial Revolution 4.0. when students find it difficult to solve HOTS type questions because they still have low problem solving abilities. In the development of thinking patterns, students have very influential problem solving abilities. In the 21st century, what students need is the ability to solve problems. the method used is a qualitative description. Then the object of this research is the teacher and students of MTs Ma'arif Pajaresuk level VIII. The object used is the ability to solve a problem, the learning model and learning resources used by the school. The aim is to analyze the needs of the student worksheet to support the PBL model in improving students' mathematical problem solving abilities. The results obtained in this study are students have low abilities in solving math problems and the media and learning models used have not been able to develop these abilities. so it is necessary to use the PBL model LKPD
Analisis Kesulitan Belajar Matematika Pada Anak Tunarungu
Authors: Nurhanifah Rr Lutfiani , Utami Wikan Budi , Isnani
Published: March 2022

Penelitian ini bertujuan untuk mengetahui faktor penyebab kesulitan belajar matematika pada siswa tunarungu dan upaya untuk mengatasi kesulitan belajar matematika yang dialami siswa tunarungu pada soal cerita materi operasi hitung campuran kelas VIII di SLB Negeri Slawi. Metode: Metode penelitian ini adalah penelitian kualitatif, pendekatan dalam penelitian ini menggunakan pendekatan deskriptif. Subjek penelitian adalah siswa tunarungu kelas VIII SLB Negeri Slawi Tahun pelajaran 2019/2020. Teknik pengumpulan data menggunakan  dokumentasi, tes dan wawancara. Temuan:  Hasil penelitian menyebutkan (1) Bentuk kesulitan belajar matematika siswa tunarungu pada soal cerita materi operasi hitung campuran yaitu siswa tunarungu sulit dalam mengubah soal cerita ke dalam bentuk matematika. (2) faktor penyebab kesulitan belajar matematika siswa tunarungu pada soal cerita materi operasi hitung campuran yaitu faktor internal siswa tunarungu sulit dalam memahami soal cerita dan kesalahan mengubah tanda operasi hitung. Faktor eksternal seperti guru tidak rutin memberikan latihan soal cerita dan tidak adanya media atau alat peraga matematika. (3) upaya mengatasi kesulitan belajar matematika yaitu guru harus rutin memberikan latihan soal cerita terutama menambahkan kosakata baru pada siswa tunarungu, penggunaan alat peraga matematika, dan memberikan motivasi serta nasihat.
RELASI AGAMA ISLAM DENGAN AGAMA LAIN
Authors: Zuhdi Muhammad
Published: March 2022

Abstrak

 

Kerukunan Umat Beragama adalah salah satu bentuk sosialisasi yang damai dan tercipta berkat adanya toleransi agama. Sebab toleransi agama merupakan salah satu sikap saling pengertian dan menghargai, tanpa adanya diskriminasi dalam hal apapun, khususnya dalam masalah agama.

Agama Islam adalah suatu agama yang banyak dianut oleh sebagian besar masyarakat indonesi, sehingga prilaku masyarakat muslim selalu menjadi sorotan, apalagi yang sbersangkutan dengan toleransi, dari sinilah penulis mengangkat makalah yang berhubungan hal tersebut, karena hal ini selalu menjadi  masalah.

Maka sangat dianggap perlu untuk menjelaskan apa itu toleransi dan apakah Islam itu agama yang toleransi atau sebaliknya.
Diagnosing Triggered Star Formation in the Galactic H ii region Sh 2-142
Authors: Sharma Tanvi , Chen Wen Ping , Panwar Neelam , Sun Yan , Gao Yu
Published: March 2022

Stars are formed by gravitational collapse, spontaneously or, in some cases under the constructive influence of nearby massive stars, out of molecular cloud cores. Here we present an observational diagnosis of such triggered formation processes in the prominent H ii region Sh 2-142, which is associated with the young star cluster NGC 7380, and with some bright-rimmed clouds as the signpost of photoionization of molecular cloud surfaces. Using near- (2MASS) and mid-infrared (WISE) colors, we identified candidate young stars at different evolutionary stages, including embedded infrared sources having spectral energy distributions indicative of active accretion. We have also used data from our optical observations to be used in SEDs, and from Gaia EDR3 to study the kinematics of young objects. With this young stellar sample, together with the latest CO line emission data (spectral resolution ∼0.16 km s−1, sensitivity ∼0.5 K), a positional and aging sequence relative to the neighboring cloud complex, and to the bright-rimmed clouds, is inferred. The propagating stellar birth may be responsible, at least partially, for the formation of the cluster a few million years ago, and for the ongoing activity now witnessed in the cloud complex.
Hot Extended Galaxy Halos around Local L* Galaxies from Sunyaev–Zeldovich Measurements
Authors: Bregman Joel N. , Hodges-Kluck Edmund , Qu Zhijie , Pratt Cameron , Li Jiang-Tao , Yun Yansong
Published: March 2022

Most of the baryons in L* galaxies are unaccounted for and are predicted to lie in hot gaseous halos (T ∼ 106.5 K) that may extend beyond R
200. A hot gaseous halo will produce a thermal Sunyaev–Zeldovich signal that is proportional to the product of the gas mass and the mass-weighted temperature. To best detect this signal, we used a Needlet Independent Linear Combination all-sky Planck map that we produced from the most recent Planck data release, also incorporating WMAP data. The sample is 12 L* spiral galaxies with distances of 3−10 Mpc, which are spatially resolved so that contamination from the optical galaxy can be excluded. One galaxy, NGC 891, has a particularly strong SZ signal, and when excluding it, the stack of 11 galaxies is detected at about 4σ (declining with radius) and is extended to at least 250 kpc (≈R
200) at >99% confidence. The gas mass within a spherical volume to a radius of 250 kpc is 9.8 ± 2.8 × 1010
M
⊙, for T
avg = 3 × 106 K. This is about 30% of the predicted baryon content of the average galaxy (3.1 × 1011
M
⊙), and about equal to the mass of stars, disk gas, and warm halo gas. The remaining missing baryons (≈1.4 × 1011
M
⊙, 40%–50% of the total baryon content) are likely to be hot and extend to the 400–500 kpc volume, if not beyond. The result is higher than predictions, but within the uncertainties.
Orientale Ejecta at the Apollo 14 Landing Site Implies a 200-million-year Stratigraphic Time Shift on the Moon
Authors: Werner Stephanie C. , Bultel Benjamin , Rolf Tobias , Assis Fernandes Vera
Published: March 2022

Detailed spectral mapping, cratering statistics, and impact basin ejecta column estimates document a new and very different stratigraphic relationship for the Apollo 14 landing site. We observe a resurfacing event in the crater size–frequency distribution in agreement with a single blanketing layer. Using the crater size–frequency distribution, we determine two relative ages (cumulative crater frequencies) that match those observed for the Imbrium and Orientale basins, respectively. The pattern and strength of resurfacing and morphological distinction by spectral features suggest the top layer to be about 10–25 m thick. We propose that this top layer at the Apollo 14 landing site is Orientale basin ejecta above Imbrium basin ejecta. Such stratigraphy reattributes the (majority of) Apollo 14 samples to Orientale rather than to Imbrium basin and implies that Orientale basin is about 3.92 Gyr old, 200 million years older than previously suggested. The youngest lunar basin thus formed at the onset, rather than amid, of recorded mare volcanism. This time shift also changes constraints on early planetary and solar system processes, such as the intensity of impact bombardment, and pleads for revision of the crater-statistics-based surface ages of other planetary bodies.
Interprofessional Relationships and Collaborative Working: Encouraging Reflective Practice
Authors: Ross Angela , King Nigel , Firth Jan
Published: March 2022

A challenge for those involved in the education and professional development of health and social care practitioners is to find ways of encouraging and enabling them to critically reflect upon complex collaborative situations and consider how they might improve interprofessional relationships. To meet this challenge, we piloted and developed a reflective exercise derived from methods used in personal construct psychology (Hargreaves,1979; Salmon,1994), which has proved to be useful in three overlapping areas; research, professional development, and classroom teaching. To illustrate the technique, this paper presents a case study of one district nurse who used the method to help her examine complex interprofessional relationships when providing long-term community care. The reflective technique (which uses arrow-shaped cards displayed on large visual layouts) was found to provide a rich description of the individual’s relationships. By employing the visual displays the district nurse was able to explore the meanings of professional identity and roles in terms of professional relationships, and to consider her intentions and actions within a complex multidisciplinary situation.
Residency Programs for Primary Care Nurse Practitioners in Federally Qualified Health Centers: A Service Perspective
Authors: Flinter Margaret
Published: March 2022

A number of social forces are converging to shape the coming health care and professional practice environment for nurse practitioners (NPs) and the public they serve. Two major innovations of the 1960s, NPs and community health centers, have reached their fourth decade since their inception. These forces have traveled parallel and overlapping paths in their mission to provide high quality health care. Today the current federally qualified community health centers (FQHCs) are a major component of the nation’s safety net for the medically underserved, special populations, and the uninsured throughout the United States. Nurse practitioners in the FQHC settings are responsible for highly complex care across lifecycles, with a focus on the treatment and management of disease along with prevention and health promotion. The author suggests that FQHC-based formal residency programs in primary care at either the post-master’s or post-doctoral level are the next step in the evolution of both FQHCs and NP preparation. Possible funding mechanisms through changes in federal graduate medical education legislation are explored.
À la croisée de l'universel et du relatif
Authors: Zavaro Maurice
Published: March 2022

Les valeurs s'imposent à nos consciences comme des évidences mais si l'on considère leur variabilité dans le temps et dans l'espace, ces évidences sont trompeuses. Deux questions se déduisent de ce constat. Existe-t-il un fondement qui, au-delà des apparences, leur donnerait une portée universelle ? Si non, sommes-nous condamnés à un relativisme sans morale ?
Large-amplitude modulation of periodic traveling waves
Authors: Métivier Guy , Zumbrun Kevin
Published: March 2022

We introduce a new approach to the study of modulation of high-frequency periodic wave patterns, based on pseudodifferential analysis, multi-scale expansion, and Kreiss symmetrizer estimates like those in hyperbolic and hyperbolic-parabolic boundary-value theory. Key ingredients are local Floquet transformation as a preconditioner removing large derivatives in the normal direction of background rapidly oscillating fronts and the use of the periodic Evans function of Gardner to connect spectral information on component periodic waves to block structure of the resulting approximately constant-coefficient resolvent ODEs. Our main result is bounded-time existence and validity to all orders of large-amplitude smooth modulations of planar periodic solutions of multi-D reaction diffusion systems in the high-frequency/small wavelength limit.
On some generalized Raina-type fractional-order integral operators and related Chebyshev inequalities
Authors: Vivas-Cortez Miguel , Mohammed Pshtiwan O. , Hamed Y. S. , Kashuri Artion , Hernández Jorge E. , Macías-Díaz Jorge E.
Published: March 2022

In this work, we introduce generalized Raina fractional integral operators and derive Chebyshev-type inequalities involving these operators. In a first stage, we obtain Chebyshev-type inequalities for one product of functions. Then we extend those results to account for arbitrary products. Also, we establish some inequalities of the Chebyshev type for functions whose derivatives are bounded. In addition, we derive an estimate for the Chebyshev functional by applying the generalized Raina fractional integral operators. As corollaries of this study, some known results are recaptured from our general Chebyshev inequalities. The results of this work may prove useful in the theoretical analysis of numerical models to solve generalized Raina-type fractional-order integro-differential equations.
Servicios ecosistémicos en áreas de montaña: beneficios y amenazas
Authors: Pereira Paulo , Inacio Miguel , Bogunovic Igor , Francos Marcos , Barceló Damià , Zhao Wenwu
Published: March 2022

Las áreas de montaña tienen un impacto importante en las dinámicas climáticas y son una de las fuentes de agua con condiciones más críticas. Las montañas fueron claves en la evolución histórica del ser humano y suministraron servicios ecosistémicos (SE) bióticos y abióticos esenciales para la vida humana. Este artículo de perspectiva estudiará la importancia de las montañas para el suministro de SE y los impactos de los diferentes factores de cambio, a saber, cambios en el hábitat, el cambio climático, la sobreexplotación, la contaminación y las especies invasoras. Las zonas de montaña tienen una gran capacidad para suministrar un número importante de recursos reguladores (regulación del clima global y local, regulación de la calidad del aire, regulación de los riesgos naturales, polinización), de aprovisionamiento (cultivos, ganado, alimentos y pesca silvestre, biomasa para energía y madera, energía renovable de agua dulce -hidroeléctrica, eólica, solar y geotérmica- y recursos minerales) y culturales (ocio y turismo, estética e inspiración del paisaje, patrimonio cultural y diversidad cultural y sistemas de conocimiento). Sin embargo, los cambios impuestos por la modificación del hábitat, el cambio climático, la sobreexplotación, la contaminación y las especies invasoras pueden aumentar los intercambios entre los SE y desencadenar la degradación del medio ambiente. En general, es necesario equilibrar la utilización de los SE de montaña y reducir los efectos de los distintos factores de cambio.
Diversity Climate Perceptions and Turnover Intentions
Authors: Kaur Itinpreet , Mishra Geeta , Farooqi Rahela
Published: March 2022

The present research aims to examine the sequential mediating effect of inclusion and job satisfaction in the relationship between diversity climate and employee turnover intentions. Data has been collected from 302 full-time employees working in the Indian IT industry using a self-administered questionnaire. Current research work tests the hypothesized connection using the structural equation modeling (SEM) approach. Further, the proposed indirect effect was determined using the PROCESS program. Study results revealed that employee sense of inclusion and job satisfaction sequentially mediates the relationship between diversity climate and turnover intentions. Taking into consideration the practical implications of the research, the present study stresses the importance of enforcing inclusive HR policies for the establishment of a positive climate for diversity. The present study adds up to the literature database by assessing the fundamental mechanism that clarifies the relationship between diversity climate and turnover intentions.
Pharmacologically Enhanced Regulatory Hematopoietic Stem Cells Revert Experimental Autoimmune Diabetes and Mitigate Other Autoimmune Disorders
Authors: Ben Nasr Moufida , Robbins David , Parone Philippe , Usuelli Vera , Tacke Robert , Seelam Andy-Joe , Driver Emily , Le Thuy , Sabouri-Ghomi Mohsen , Guerrettaz Lisa , Shoemaker Daniel , Fiorina Paolo
Published: March 2022

Type 1 diabetes (T1D) is characterized by the loss of immune self-tolerance, resulting in an aberrant immune responses against self-tissue. A few therapeutics have been partially successful in reverting or slowing down T1D progression in patients, and the infusion of autologous hematopoietic stem cells (HSCs) is emerging as an option to be explored. In this study, we proposed to pharmacologically enhance by ex vivo modulation with small molecules the immunoregulatory and trafficking properties of HSCs to provide a safer and more efficacious treatment option for patients with T1D and other autoimmune disorders. A high-throughput targeted RNA sequencing screening strategy was used to identify a combination of small molecules (16,16-dimethyl PGE2 and dexamethasone), which significantly upregulate key genes involved in trafficking (e.g., CXCR4) and immunoregulation (e.g., programmed death ligand 1). The pharmacologically enhanced, ex vivo–modulated HSCs (regulatory HSCs [HSC.Regs]) have strong trafficking properties to sites of inflammation in a mouse model of T1D, reverted autoimmune diabetes in NOD mice, and delayed experimental multiple sclerosis and rheumatoid arthritis in preclinical models. Mechanistically, HSC.Regs reduced lymphocytic infiltration of pancreatic β cells and inhibited the activity of autoreactive T cells. Moreover, when tested in clinically relevant in vitro autoimmune assays, HSC.Regs abrogated the autoimmune response. Ex vivo pharmacological modulation enhances the immunoregulatory and trafficking properties of HSCs, thus generating HSC.Regs, which mitigated autoimmune diabetes and other autoimmune disorders.
Preclinical Analysis of Candidate Anti-Human CD79 Therapeutic Antibodies Using a Humanized CD79 Mouse Model
Authors: Wemlinger Scott M , Parker Harp Chelsea R , Yu Bo , Hardy Ian R , Seefeldt Matthew , Matsuda Jennifer , Mingueneau Michael , Spilker Kerri A , Cameron Thomas O , Larrick James W , Getahun Andrew , Cambier John C
Published: March 2022

The BCR comprises a membrane-bound Ig that is noncovalently associated with a heterodimer of CD79A and CD79B. While the BCR Ig component functions to sense extracellular Ag, CD79 subunits contain cytoplasmic ITAMs that mediate intracellular propagation of BCR signals critical for B cell development, survival, and Ag-induced activation. CD79 is therefore an attractive target for Ab and chimeric Ag receptor T cell therapies for autoimmunity and B cell neoplasia. Although the mouse is an attractive model for preclinical testing, due to its well-defined immune system, an obstacle is the lack of cross-reactivity of candidate therapeutic anti-human mAbs with mouse CD79. To overcome this problem, we generated knockin mice in which the extracellular Ig-like domains of CD79A and CD79B were replaced with human equivalents. In this study, we describe the generation and characterization of mice expressing chimeric CD79 and report studies that demonstrate their utility in preclinical analysis of anti-human CD79 therapy. We demonstrate that human and mouse CD79 extracellular domains are functionally interchangeable, and that anti-human CD79 lacking Fc region effector function does not cause significant B cell depletion, but induces 1) decreased expression of plasma membrane-associated IgM and IgD, 2) uncoupling of BCR-induced tyrosine phosphorylation and calcium mobilization, and 3) increased expression of PTEN, consistent with the levels observed in anergic B cells. Finally, anti-human CD79 treatment prevents disease development in two mouse models of autoimmunity. We also present evidence that anti-human CD79 treatment may inhibit Ab secretion by terminally differentiated plasmablasts and plasma cells in vitro.
Skin failure: A two-faced concept
Authors: Melandri Davide , Venturi Michela , Naldi Luigi
Published: March 2022

While it is well accepted that the skin is an organ of the body, the fact that it can fail as many other organs do, is not well understood and considered. Some attempts have been made to define “skin failure” with two distinct and quite different meanings, which reflect, in a way, an “inside out” vs an “outside in” pathogenetic process [...]
Efficacy of 1.5% Metformin Gel as an Adjuvant to Scaling, Root Planing, and Curettage for the Treatment of Infrabony Defects in Chronic Periodontitis Patients
Authors: Patil Kuldeep S. , Mahajani Monica , Choudhary Sneha H. , Aldhuwayhi Sami D. , Thakare Amar , Mustafa Mohammed Ziauddeen
Published: March 2022

Context:

To compare and evaluate clinically and radiographically the efficacy of 1.5% metformin (MF) gel and placebo gel as an adjunct to scaling and root planing (SRP) and Curettage for the treatment of infrabony defects (IBDs) in chronic periodontitis patients.

Subjects and Methods:

The study was conducted randomly on 15 patients of both the genders. Each patient contributed two sites (total 30 sites - Split mouth design) which was randomly assigned to one of the two treatments: (i) Site A (Control Site) in which SRP was done along with curettage and intrapocket application of Placebo Gel and (ii) Site B (Test Site) in which SRP was done along with curettage and intrapocket application of 1.5% MF Gel. The Periodontal status {which included plaque index (PI), sulcus bleeding index (SBI), probing pocket depth (PPD), clinical attachment level (CAL), IBD Depth} was assessed both clinically and radiographically at baseline, 3 months, and 6 months after treatment.

Results:

It was found that there was statistically significant difference in the periodontal status (PI, SBI, PPD, CAL, IBD depth) of the two sites when compared from baseline to 6 months.

Conclusions:

Local delivery of 1.5% MF improves the clinical outcomes of traditional treatment (SRP) and curettage and should be considered particularly as an adjunct to it.
Assessment of Serum Parameters in Stable Coronary Artery Disease Patients in Correlation with Healthy and Chronic Periodontitis Patients
Authors: Sanikop Mukta V , Aspalli Shivanand , G Nagappa , Jabeen Rafia Nawab , Aspalli Nagaveni , Babu C. Hemachandra
Published: March 2022

Background:

Periodontitis is a chronic inflammatory disease and has been strongly associated with elevation of systemic markers such as C-reactive protein (CRP), fibrinogen (FIB), and lipid profile, which have also been significantly associated with coronary heart disease (CHD). Hence, there is a need to assess the possible association between chronic periodontitis and coronary artery disease.

Materials and Methods:

A study included 100 subjects divided into four groups. Group I: stable coronary artery disease with chronic periodontitis, Group II: stable coronary artery disease without chronic periodontitis, Group III: chronic periodontitis without coronary artery disease, and Group IV: healthy controls. Gingival index, Russell's periodontal index, pocket depth, and clinical attachment level were recorded. Venous blood was collected from the patients, and serum fibrinogen, CRP, and lipid profile levels were estimated.

Results:

The intragroup comparison of biochemical and periodontal parameters showed statistically significant results with P < 0.05. The intergroup comparison of serum FIB, total cholesterol, high density lipoprotein, low density lipoprotein, and clinical attachment level showed statistical significant results (P = 0.000, P = 0.000, P = 0.001, P = 0.025, and P = 0.000, respectively) between Groups I and III.

Conclusion:

The results of the study indicate that there might a possible correlation between coronary artery disease and chronic periodontitis, but periodontitis-cardiovascular link is complex and difficult to define though there is sufficient evidence for their association. Leakage of pro-inflammatory cytokines from the ulcerated periodontium causes the production of acute-phase proteins by the liver. To prove the relationship, further studies should be considered making use of other markers of inflammation with prospective randomized controlled studies involving large population.
COVID-19 vaccine uptake and vaccine hesitancy in Indian patients with cancer
Authors: Noronha Vanita , Abraham George , Bondili Suresh Kumar , Rajpurohit Annu , Menon Rakesh P. , Gattani Shreya , Trikha Mehak , Tudu Rajanigandha , Kota Kishore Kumar , Singh Ajay Kumar , Elamarthi Prahalad , Panda Goutam Santosh , Rai Rahul Kumar , Krishna Madala Ravi , Chinthala Sravan Kumar , Shah Minit Jalan , Shah Devanshee , Tiwari Atul , Vora Deep Nareshbhai , Tongaonkar Arnav Hemant , John George , Patil Akshay , Menon Nandini Sharrel , Patil Vijay Maruti , Joshi Amit , Banavali Shripad , Badwe Rajendra A. , Prabhash Kumar
Published: March 2022

Background:

Patients with cancer are at a higher risk of severe forms of coronavirus disease 2019 (COVID-19) and mortality. Therefore, widespread COVID-19 vaccination is required to attain herd immunity.

Objectives:

We aimed to evaluate the uptake of the COVID-19 vaccine in Indian patients with cancer and to collect information regarding vaccine hesitancy and factors that contributed to vaccine hesitancy.

Materials and Methods:

This was a questionnaire-based survey conducted between May 7, 2021 and June 10, 2021 in patients aged 45 years and over, with solid tumors. The primary end points of the study were the proportion of Indian patients with cancer aged 45 years and older who had not received the COVID-19 vaccine, and the reasons why these patients had not received the COVID-19 vaccine. Our secondary end points were the proportion of patients with a history of COVID-19 infection, and the proportion of the patients who had vaccine hesitancy. Additionally, we attempted to assess the factors that could impact vaccine hesitancy.

Results:

A total of 435 patients were included in the study. Of these, 348 (80%) patients had not received even a single dose of the COVID-19 vaccine; 66 (15.2%) patients had received the first dose, and 21 (4.8%) had received both the doses. Approximately half (47.1%) of the patients reported that they took the COVID-19 vaccine based on the advice from a doctor. The reasons for not taking the COVID-19 vaccine could be considered as vaccine hesitancy in 259 (77%) patients. The two most common reasons were fear in 124 (38%) patients (fear of side-effects and of the impact of the vaccine on the cancer/therapy) and lack of information in 87 (26.7%) patients. On the multivariate analysis, the two factors found to be significantly associated with vaccine hesitancy were a lower educational level (OR, 1.78; 95% CI, 1–3.17; P = 0.048) and a lack of prior advice regarding the COVID-19 vaccine (OR, 2.80; 95% CI, 1.73–4.53; P < 0.001).

Conclusion:

Vaccine hesitancy is present in over half of our patients, and the most common reasons are a fear of the vaccine impacting the cancer therapy, fear of side-effects, and lack of information. Widespread vaccination can only be attained if systematic programs for education and dissemination of information regarding the safety and efficacy of the COVID-19 vaccine are given as much importance as fortification of the vaccination supply and distribution system.
Pulse arrival time
Authors: Deshmukh Chaitali A. , Jindal Ghanshyam D. , Bagal Uttam R. , Nagare Gajanan D.
Published: March 2022

Pulse arrival time is the time elapsed between the R-wave of electrocardiogram and systolic peak in peripheral pulse obtained by any of the plethysmographic methods. Similarly, differential pulse arrival time, also known as pulse transit time, is the time elapsed between systolic peaks of proximal and distal peripheral pulse recordings in an extremity. Distance between the proximal and distal site in the extremity (in meters) divided by differential pulse arrival time (in seconds) gives arterial pulse wave velocity in the limb segment. Differential pulse arrival time has been used to discriminate between an aortic or arterial block from generalized atherosclerosis in aortic and arterial occlusive diseases for nearly four decades. All along there have been efforts to monitor beat-to-beat blood pressure with the help of these time intervals and other pulse parameters. Encouraging correlation has been observed with that obtained by Finapres. Recently pulse arrival time has been explored for the prompt detection of sudden hypertensive episodes during laryngeal microsurgery, for detection of mental stress, monitoring of baroreflex sensitivity, and real-time monitoring of blood pressure. This paper briefly describes the measurement technique of pulse arrival time and an overview of its clinical applications.
Planktonic Foraminiferal Biostratigraphy of the Late Eocene and Oligocene in the Palmyride Area, Syria
Authors:   INA – Industrija nafte d. d., Hernitz Kučenjak Morana , Premec Fućek Vlasta , Slavković Renata ,   INA - Naftaplin, Mesić Ivan ,   INA – Industrija nafte d. d.
Published: March 2022

Three deep exploration wells in the Palmyride area (Syria) have beendrilled through Oligocene and Eocene deposits. A detailed micropalaeontological investigation has been performed on the planktonic foraminiferal assemblage from drill cuttings. Standard planktonic foraminiferal zones from P15 to P22 (E15 to O6) have been identified.The test morphology and diversity of the foraminiferal assemblageindicate a general cooling trend during the late Eocene andOligocene. The specialized Eocene forms (K-mode life strategy) suchas turborotaliids, globigerinathekids and hantkeninids become extinctin the uppermost late Eocene. The Oligocene is characterized by thedominance of cooler, opportunistic planktonic foraminifera (r-modelife strategy), such as pseudohastigerinids, chiloguembelinids, globigerinids and tenuitellids. A very low number of benthic foraminiferain late Eocene cuttings implies sedimentation in a deep, open seaenvironment. A gradual increase of the benthic foraminiferal proportionthrough the Oligocene indicates shallowing of the sedimentaryenvironment.
Pliocene Alluvial Sediments in the Drava Depression of the Virovitica–Slatina Area, Northern Croatia
Authors:   Department of Geology and Palaeontology, Faculty of Science, University of Zagreb, Croatia, Mrinjek Ervin , Sremac Jasenka ,   Department of Geology, Faculty of Science, University of Zagreb, Croatia, Velić Josipa ,   Faculty of Mining Geology and Petroleum Engineering, University of Zagreb
Published: March 2022

Clastic sediments in the vicinity of Virovitica (Northern Croatia) consistof gravels, sands, silt clays and marls. Gravels with discontinuoussheet-like geometry are typical for an alluvial fan system. The mostabundant sediment, quartz rich sand, originates from a sandy braidedriver system. Silt, clays, and marls were deposited in the flood plain.They contain fossil macroflora indicative of moderate climate conditions,including maidenhair leaves (Ginkgo), the presence of whichsuggests that these sediments were deposited before the Pleistoceneglaciation.
Цветная теорема Тверберга, обобщения и новые результаты
Authors: Jojic Dusko , Panina Gaiane Yur'evna , Zivaljević Rade
Published: March 2022

Мы доказываем кратную цветную теорему Тверберга и сбалансированную цветную теорему Тверберга, пользуясь различными методами и приемами. Доказательство первой теоремы использует в качестве конфигурационнго пространства шахматный комплекс с кратностями и теорию Эйленберга-Красносельского о степенях эквивариантных отображений для несвободных действий групп. Доказательство второй теоремы опирается на высокую связность конфигурационного пространства, установленную с помощью дискретной теории Морса.
Библиография: 35 наименований.
Основы теории Ли для $\mathcal E$-структур и некоторые ее применения
Authors: Gorbatsevich Vladimir Vitalyevich
Published: March 2022

Строится аналог классической теории Ли для случая групп Ли и алгебр Ли, определенных над алгеброй дуальных чисел. Указаны применения к изучению приближенных симметрий дифференциальных уравнений и к построению аналогов натуральной геометрии И. Ельмслева.
Библиография: 17 наименований.
О числе эпи-, моно- и гомоморфизмов групп
Authors: Brusyanskaya Elena Konstantinovna , Klyachko Anton Aleksandrovich
Published: March 2022

Число гомоморфизмов из группы $F$ в группу $G$ делится, как известно, на наибольший общий делитель порядка группы $G$ и экспоненты группы $F/[F,F]$. Мы исследуем вопрос о том, что можно сказать про число гомоморфизмов, удовлетворяющих некоторым естественным условиям вроде инъективности или сюръективности. Простейшим нетривиальным следствием наших результатов является тот факт, что в любой конечной группе число порождающих пар $(x,y)$ таких, что $x^3=1=y^5$, делится на наибольший общий делитель пятнадцати и порядка группы $[G,G]\cdot\{g^{15}\mid g\in G\}$.
Библиография: 22 наименования.
Land-use impacts on the hydrology of the Hidden River groundwater subbasin, Horse Cave, Hart County, Kentucky
Authors: Osborne Cesalea , Keeling David , Polk Jason , Kambesis Patricia , Cary Kevin
Published: March 2022

Hidden River Cave, located in the city of Horse Cave, Ky., forms one of the main tributaries of the Hidden River groundwater subbasin that spans multiple counties in south-central Kentucky. Hidden River Cave formed in Mississippian-aged carbonates and consists of a dendritic network of canyons and collapsed domes; a major trunk stream flows through the cave that supports myriad subsurface ecosystems and recharges the Mammoth Cave aquifer and the Green River, important water resources on which several communities depend. Poor land-use practices historically have contaminated the cave stream. As a result, the hydrology of the Hidden River groundwater subbasin has been extensively studied using fluorescent dye-tracing, and developments in groundwater resource management have improved cave conditions. However, land-use boundaries that intersect with areas of recharge still influence contaminant transport to groundwater. This study combined groundwater dye-tracing, high-resolution stage data collection, and supervised classification in a geographic information system (GIS) to assess land-use impacts on the hydrology of the Hidden River groundwater subbasin. Dye-tracing confirmed that stormwater infrastructure in Horse Cave discharges to Hidden River Cave, and, subsequently, the Hidden River groundwater subbasin. High-resolution stage data determined that the cave’s major trunk streams respond to precipitation within 40 minutes to 1.5 hours, while baselevel conditions, except after sustained precipitation, are met three to four days after precipitation ends. Supervised classification determined that development is concentrated in Horse Cave and has increased by approximately 7 % between 1989 and 2017. These results suggest opportunities for the implementation of karst-specific stormwater management regulations where such regulations are weak.
Evaluation of chickpea (Cicer arietinum L.) genotypes for tolerance to Frost in controlled environment
Authors: Admas Sintayehu , Haileselassie Teklehaimanot , Tesfaye Kassahun , Shiferaw Eleni , Flynn K. Colton
Published: March 2022

The study aimed to evaluate the frost tolerance variability of Ethiopian chickpea (Cicer arietinum L.) germplasm under controlled environment using growth chamber. A total of 72 genotypes were screened for frost tolerance using complete randomized design with two replications. The analysis of variance result indicated that there was a significant (P<0.01) difference amongst genotypes for plant height, number of foliage, number of primary branch, growth rate, and fresh biomass weight. Based on plant survival rate (SR), 31 (43.1%) genotypes scored above 0.8 values. Based on Freezing tolerance rate (FTR), 37(51.4%) and 31(43.1%) genotypes were rated at a score of 1 to 3 in freezing test 1 (T1) and freezing test 2 (T2), respectively. There was a strong negative correlation between fresh biomass yields with SR (-0.75** for T1 and -0.71** for T2 at p<0.01), while a strong positive correlation with FTR value (0.74** at p<0.01). Based on the combined result of FTR and SR scores, 26 genotypes were found to be frost-tolerant genotypes at a temperature level as low as -5oC at seedling stage. Based on our findings, Ethiopian chickpea germplasm has a genetic potential for frost-tolerance traits for use in breeding programs.
Survey and identification of termites (Insecta, Isoptera) using morphological and molecular methods from eastern, central and western Ethiopia.
Authors: Kassaye Ashenafi , Emana Getu Emana Getu , Wakgari Mulatu , Goftishu Muluken , Awol Seid Awol Seid , Montoya Samantha J. , Gile Gillian H.
Published: March 2022

The subfamily Macrotermitinae are the largest members among the Family Termitidae which are the fungus growing sub-family and Odontotermes are the most abundant genus from the subfamily.  The taxonomy of termites is poorly described in Ethiopia. In the present study 168 termite samples were collected from eight locations of Eastern, Western and Central Ethiopia. The collected samples were identified based on morphological and molecular characteristics. Molecular identification was done based on the dna sequence of a portion of the mitochondrial 16S rrna gene. A phylogenetic analysis of the collected samples and the outgroup resulted in a consensus tree with four distinct groups. Geographical distribution of the samples also supported the resulting clades. Odontotermes were the most widely distributed termites from the collected samples. The genetic distance between the sample showed that Odontotermes zambesiensis, Babile 33 is more distantly related with the rest of the samples.
An integrated knowledge-based system for early detection of eye refractive error using data mining
Authors: Birhane Teklay , Teferi Dereje , Mohammed Tariku
Published: March 2022

Refractive error is one of optical defect in the human visual system. Refractive error is a very common disease these days in all populations and in all age groups. Uncorrected and undetected refractive error contributes to visual impairment, blindness and places a considerable burden on a person in the world. The long use of technological devices such as smart phones also poses a new burden on the human eye. The intensity and brightness of these digital devices open a new door for high prevalence of eye refractive errors. Early medical diagnosis of the disease may help in avoiding complications and blindness. Data mining algorithms can be applied to help in ophthalmology and detection of an eye disease at an early stage. So mining the ophthalmology data in efficient manner is a critical issue. This research work deals with development of an integrated knowledge-based system that helps to detect eye refractive error early and provides appropriate advice for the patients. In this study, the hybrid knowledge discovery process model of data mining that was developed for academic research is used. About 9000 ophthalmology data from selected eye health centers are used to build the model. The sample data was preprocessed for missing values, outliers, and noise. Then the model is built using decision tree (J48 and REPTree) and rule induction (JRip and part) algorithms. The part algorithm has registered better predictive performance with accuracy of 60% and 96.45% for subjective and objective based model evaluation, respectively as compared to J48, REPTree, and JRip. Finally, the knowledge discovered with this algorithm is further used to build the knowledge-based systems. The Java programing language is used to integrate data mining results to knowledge-based system. The performance of the proposed system is evaluated by preparing test cases. Overall, the knowledge based system resulted in 89.2% accuracy.  Finally the study concludes that discovering knowledge using data mining techniques could be used as a functional eye refractive error detection system.
Teoria historii życia jako teoria rozwoju człowieka
Authors: Łukasik Andrzej
Published: March 2022

The Life History Theory as a Theory of Human Development The life history theory (LHT) is an evolutionary theory derived from evolutionary biology. According to it, species choose a reproductive strategy that maximizes adaptation (i.e., increases the chances of surviving and producing offspring) on the basis of influences contained in the environment which impacts development in the early stages of life. LHT, due to its connections with such psychological theories as psychosocial acceleration, the evolutionary theory of socialization, or the attachment theory, is also a developmental psychology theory which points to specific development paths within an evolutionary frame. The aim of this article is to shed light on LHT from the point of view of developmental psychology – a question as yet absent from the Polish literature of the subject.
Perkembangan gonad ikan betok (Anabas testudineus) betina yang diinduksi ekstrak hipofisa sapi
Authors: Tanbiyaskur Tanbiyaskur , Fitrani Mirna , Fahrudin Muhammad , Lutfi Lutfi , Muslim Muslim
Published: March 2022

Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ekstrak hipofisa sapi terhadap perkembangan gonad induk betina ikan betok (Anabas testudineus). Metode penelitian mengggunakan rancangan acak lengkap, empat perlakuan dosis ektrak hipofisa yakni 0,0; 0,1;  0,3; 0,6 ml/kg. Penyuntikan ekstrak hipofisa secara muscular. Hasil penelitian menunjukan bahwa dosis 0.6 ml/kg, performance perkembangan gonad terbaik, dimana diameter telur  0,640 mm,  gonado somatik indek 4,22%, hepato somatik indeks 0,18% dan fekunditas total 6404 telur. Parameter kualitas air selama pemeliharaan ikan berada dalam kisaran yang baik untuk perkembangan gonad ikan betok.
Stylosanthes scabra: genetic variability of forage quality traits
Authors: De Araújo Américo Fabiana Karla , Ayres Carvalho Marcelo , Vitória Malaquias Juaci , Braga Ramos Allan Kardec , José Braga Gustavo , Takao Karia Claudio , Lazarini da Fonseca Carlos Eduardo
Published: March 2022

Stylosanthes scabra Vogel is a tropical legume grown in dry tropical and subtropical environments. The objective of this research was to evaluate the genetic diversity of forage quality traits for 80 accessions of S. scabra. Seven plants from each accession were planted in a single-line plot with no replicates at Embrapa Cerrados, Brazil. All plants were harvested 90 days after planting. Crude protein (CP), in vitro dry matter digestibility (IVDMD), neutral detergent fibre (NDF), acid detergent fibre (ADF), lignin (LIG), hemicellulose (HEMIC) and cellulose (CELLU) were estimated. Data were submitted to principal component analysis (PCA) and a cluster analysis was performed to identify groups of similarity. Simpson and Shannon–Weaver diversity indices estimated the genetic diversity. The average values of CP, IVDMD, NDF, ADF, LIG, HEMIC and CELLU were 220g/kg, 560g/kg, 516.8g/kg, 368g/kg, 69.4g/kg, 148.8g/kg and 298.6g/kg, respectively. There was a significant difference among collection sites for IVDMD, ADF and CELLU. The first two principal components accounted for 73% of the total variation. The 80 accessions resulted in four clusters, among which significant differences were observed for CP, IVDMD and ADF. Group IV, with 24 accessions, had the highest CP and IVDMD concentrations and the lowest ADF concentration, being the highest-quality forage group. Diversity indices were 0.78 and 0.81 for Simpson’s and Shannon–Weaver’s, respectively. In conclusion, there is genetic diversity for forage quality traits among S. scabra.
The algebra of binary trees is affine complete
Authors: Arnold Andre , Cegielski Patrick , Grigorieff Serge , Guessarian Irene
Published: March 2022

A function on an algebra is congruence preserving if, for any congruence, it
maps pairs of congruent elements onto pairs of congruent elements. We show that
on the algebra of binary trees whose leaves are labeled by letters of an
alphabet containing at least three letters, a function is congruence preserving
if and only if it is polynomial.
Author Index
Authors: Editor
Published: March 2022

Author Index
Мodern South Ossetian historiography and its «uncomfortable topics»
Authors: Гассиева M.A.
Published: March 2022

Рассмотрены аспекты изучения «неудобных тем», которые в советскойнауке не нашли своего объективного отображения, оценки и осмысления. В 90-е годырассекречиваются архивы, пересматривается история советской действительности.«Неудобные» в прошлом вопросы становятся самостоятельным объектом изучения висториографии, в том числе в югоосетинской. В научной литературе и публицистикепоявились работы, осмысливающие геноцид южных осетин в 1920 году и необоснован-ные политические репрессии в 1937–1938 гг.

The aspects of the study of "uncomfortable topics", which in Soviet science have not foundtheir objective refl ection, evaluation and comprehension, are considered. In the 1990s, archiveswere declassifi ed, and the history of Soviet reality was being revised. “Uncomfortable” questions inthe past are becoming an independent object of study in historiography, including South Ossetianhistoriography. Scientifi c literature and journalism have published works interpreting the genocideof South Ossetians in 1920 and unjustifi ed political repression in 1937–1938.
Some notable artifacts of the Faskau necropolis near the village Galiat, Republic of North Ossetia-Alania
Authors: Чшиев В.Т.
Published: March 2022

В статье рассматриваются археологические материалы известногонекрополя кобанской культуры Кавказа Фаскау, примечательные с точки зрения ихфункционального и ритуального назначения

The article deals with the archaeological materials of the famous Faskau necropolis ofthe Koban culture of the Caucasus, which are noteworthy in terms of their functional and ritualpurpose
Characteristics of minerological and geochemical features of Filizchay stratiform pyritic fi eld (Great Caucasus, Azerbaijan)
Authors: Саттарзаде Н.А. , Новрузов Н.А.
Published: March 2022

Филизчайское колчеданно-полиметаллическое месторождение, приуро-ченное к нижнеюрским (верхнеплинсбахским) терригенным отложениям, характери-зуется богатым минеральным составом, разнообразием текстурно-структурныхособенностей и широким геохимическим спектром. Основными текстурными типамиколчеданно-полиметаллические руд являются слоисто-полосчатый, массивный, пятни-сто-вкрапленный и прожилково-вкрапленный. Главные рудные минералы – пирит, сфа-лерит, галенит, халькопирит и пирротин – представлены несколькими генерациями.Установлено, что медь, цинк, свинец и серебро являются важнейшими промышленны-ми компонентами руд. Среди промышленно-технологических типов руд самые высокиеконцентрации благородных металлов (Au и Ag) обнаруживаются в окисленных рудах.В природных типах руд месторождения элементами-примеся ми наиболее обогащеныслоисто-полосчатые колчеданно-полиметаллические. Показатели концентраций – эле-ментов примесей и величины количественных соотношений между ними в рудах – могутбыть использованы в качестве геохимических индикаторов физико-химических условийрудоотложения.

Filizchay pyritic-polymetallic fi eld attributed to the Lower Jurassic (Upper Plinsbach)terrigeneous deposits is characterized by rich mineralogical composition, diversity of texturaland structural peculiarities and wide geochemical spectrum. The major textural types of pyriticpolymetallicore are laminated-banded, massive, spotty-impregnated and veinlet-impregnated.The basic ore minerals are pyrite, sphalerite, galenite, chalcopyrite and pyrrhotite represented byseveral generations. Determined that copper, zinc, lead and silver are the major commerciallyvaluable components of ore. Higest concentrations of precious metals (gold and silver) areidentifi ed in oxidized ore of commercial-technological type of ore. In natural ore type the laminatedbandedpyritic-polymetallic ore is the ore type most enriched by elements-impurities. Parametersof concentrations of elements-impurities and values of their quantitative ratios can be used asgeochemical indicators of physical and chemical characteristics of ore deposition.