bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH E_PRODUCT QUALITY, E_SERVICE QUALITY, E_INNOVATION, E_PRICE DAN E_STORE IMAGE TERHADAP E_PURCHASE INTENTION SOCIOLLA
Authors: Lestari Ririn Ari Dwi , Dewi Citra Kusuma
Published: February 2022

E-commerce (electronic commerce) saat ini sedang digandrungi oleh para pecinta online shopping. Secara sederhana e-commerce dapat dijelaskan sebagai proses pembelian maupun penjualan produk secara elektronik. karena semakin berkembangnya e-commerce beberapa tahun belakangan ini secara bertahap e-commerce dapat menggantikan toko tradisional atau offline. monthly active user (MAU) e-commerce memperoleh hasil tertinggi yang mencapai 137 juta pengguna setiap bulan. kemudian hasil riset menyebutkan pengguna e-commerce di Indonesia didominasi oleh perempuan. Sementara itu produk Kecantikan menempati peringkat ke tiga sebagai produk paling laris dijual di e-commerce, Oleh karena itu produk kecantikan menjadi salah satu kategori produk yang digemari oleh pengguna e-commerce.       Penelitian ini bertujuan untuk mengetahui pengaruh pengaruh e_product quality, e_service quality, e_innovation, e_price dan e_store image terhadap e_purchase intention Sociolla. Pengumpulan data pada penelitian ini melalui penyebaran kuesioner dan menggunakan analisis data kuantitatif. Pengambilan sampel dilakukan dengan metode non- probability sampling yaitu dengan teknik purposive sampling. Sampel yang digunakan dalam penelitian ini sebanyak 100 responden. Metode analisis yang digunakan pada penelitian ini adalah uji Analisis Regresi Berganda dan Alat analisis yang digunakan dengan bantuan SPSS versi 25.       Berdasarkan hasil penelitian dari analisis deskriptif menunjukkan bahwa variabel e_product quality, e_service quality, e_price dan e_store image termasuk kedalam kategori baik, lalu variabel , e_innovation termasuk kedalam kategori Sangat baik, sedangkan e_purchase intention termasuk kedalam kategori cukup baik . Hasil analisis regresi linear berganda dapat disimpulkan bahwa e_product quality, e_service quality, e_innovation, e_price dan e_store image berpengaruh positif dan signifikan terhadap e_purchase intention Sociolla baik secara parsial maupun simultan. Berdasarkan hasil uji koefisien determinasi diperoleh nilai sebesar 95,5%. Hal ini berarti hubungan antar variabel independen dengan variabel dependen sebesar 95,8%.Kata kunci : e_product quality, e_service quality, e_innovation, e_price, e_store image, e_purchase intention
PENGARUH MOTIVASI DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN PADA CV INDAH BARU GROUP GENTENG
Authors: Oktadilah Sofia , Syarifuddin Syarifuddin
Published: February 2022

Penelitian ini dilatarbelakangi oleh hasil data primer yang menyatakan bahwa motivasi dan lingkungan kerja karyawan pada CV Indah Baru kurang optimal. Perusahaan menginginkan kinerjanya meningkat setiap tahun agar dapat menang dalam menghadapi persaingan, oleh sebab itu kinerja karyawan menjadi perhatian karena akan mempengaruhi kinerja perusahaan.Tujuan penelitian ini guna untuk mengetahui pengaruh motivasi dan lingkungan kerja terhadap kinerja karyawan  di CV Indah Baru Group.

Penelitian ini menerapkan metode kuantitatif deskriptif. Populasi pada penelitian ini adalah seluruh karyawan tetap CV Indah Baru Group yang terdiri dari 73 orang dengan menggunakan sampling jenuh. Analisis data yang digunakan yakni analisis deskriptif, uji asumsi klasik serta analisis regresi berganda.

Berdasarkan hasil analisis deskriptif motivasi termasuk ke dalam kategori baik dan juga untuk lingkungan kerja termasuk ke dalam kategori baik sedangkan untuk kinerja karyawan sama dalam kategori baik. Berdasarkan hasil penelitian menunjukkan bawa motivasi dan lingkungan kerja berpengaruh secara parsial dan isimultan terhadap kinerja karyawan sebesar 61,6% sedangkan sisanya 38,4% dipengaruhi oleh faktor lain yang tidak diteliti pada penelitian ini
The Grid and the Park: Public Space and Urban Culture in Buenos Aires, 1887–1936.
Authors: Gorelik Adrián
Published: February 2022

Since its publication in Spanish in 1998, The Grid and the Park not only revitalized studies on the history of Buenos Aires, but also laid the foundation for a specific type of cultural work on the city —an urban perspective for cultural history, as its author would describe it— that has had a sustained impact in Latin America. Public space, embodied in the grid of city blocks and the park system, here appears as a particularly productive category because it encompasses dimensions of the material city, politics, and culture, which are usually studied separately. From Domingo Faustino Sarmiento’s figurations of Palermo Park in the mid-nineteenth century to Jorge Luis Borges’s discovery of the suburb in the 1920s; from the modernization of the traditional center carried out by Mayor Torcuato de Alvear in the 1880s to the questioning of that centrality by the emergence of the suburban barrio, the book weaves the changing ideas on public space with urban culture to produce a new history of the metropolitan expansion of Buenos Aires, one of the most extensive and dynamic urban centers of the early twentieth century.
Six decades of publication performances and scientific maps on sports nutrition
Authors: Abdullah Khairul Hafezad , Gazali Novri , Abd Aziz Fadzli Shah , Syam Elgamar , Muzawi Rometdo , Rio Unang , Cendra Romi , Nazirun Novia
Published: February 2022

A well-balanced diet is essential for individuals, particularly athletes, because it improves overall health by supplying energy besides repairing and replacing damaged cells. A well-balanced diet is also benefitting athletes to fuel their bodies before, during, and after training. This study aims to examine the intellectual structure of sports nutrition research using bibliometric measures from 1959 to 2021 based on the Scopus database. The study was investigated using SciMAT software, which employed keyword co-occurrence analysis to extract performance and scientific output vis-à-vis critical topics or themes in sports nutrition. The findings indicated that sports nutrition possesses enormous potential and growth potential. The most prevalent themes in this research area are trace elements, exercise, questionnaire, carbohydrate, and adolescent. Also, this study put up to analysing sports nutrition in countless fields, assisting in understanding its intellectual structure. Future researchers could use this data to identify the focus of awareness and make decisions in multiple ways. This study has a few limitations: 1) the researchers’ interpretation of the themes in this study was grounded on their knowledge; 2) this study only considered publication records from the Scopus database, and some sports nutrition publications may not have been included; and 3) if additional databases, such as Google Scholar, Microsoft Academics, or Dimensions, were accessed, the subject area may have shifted. The findings of this study should be accepted as a single evidence-based framework for developing future studies on sports nutrition research that will benefit researchers, practitioners, and policymakers.
A short review on Foraminifera studies: retrospective, perspective and prospective
Authors: Sagar Prajapati P. , Mrugesh Trivedi H.
Published: February 2022

Foraminifera or Forams as they are generally called are ubiquitous eukaryotic marine ameboid protists found all over the globe and cover thousands of species living currently in the sea and some in freshwater as well. The classical research studies on Foraminifera are limited to its morphologies such as shell shape, material, ornamentation and chamber formation due to the lack of molecular data of DNA sequences. This review will help an aspiring Foraminiferalogist to take molecular studies by providing a basic understanding of Foraminifera collection and processing as well as detailing its commonly used fingerprint region called SSU DNA which can be used to better understand its phylogenetics and help us better decode the nature of these ameboid protists with each other as well as with other species. The lack of molecular studies on Foraminifera in the region of the Indian subcontinent suggests a huge potential of research that can be carried out on Foraminifera DNA.
A Flower-like Cadmium Cobaltite Architecture for Efficient Degradation of Crystal Violet using a Photo‐Induced Catalytic Method: Insight into the Degradation Pathway
Authors: Samota Jayanti , Sharma Suraj , Prajapat Prakash , Intodia Kumud
Published: February 2022

The present study describes the potential use of cadmium cobaltite nano-flower (CCNF) as photocatalyst for the removal of organic dye. The CCNF was prepared through facile, one-pot and costeffective hydrothermal approach. The designed CCNF was found to possess heterogeneous photocatalytic potential against the oxidative degradation of crystal violet dye taken as a model pollutant. The photocatalytic performance of CCNF was evaluated under visible light. The best photocatalytic performance was achieved under visible light with almost complete degradation (87.80%) exhibited within 2 hr of irradiation time. Furthermore, the degradation efficiency of the prepared CCNF was determined in the presence and absence of quenchers and under different pH conditions. The intermediates and final products were investigated by FTIR analysis. The radical trapping studies show that holes (h+), superoxide radicals (•O2ˉ) and hydroxyl radicals (•OH) were identified as the main active species in the reaction. The plausible catalytic mechanism and process were proposed. Finally, this technique can be effortlessly scaled-up for the removal of various polycyclic organic wastes that may be of potential industrial and environmental interests.
Phytoremediation potential of spontaneous plant species in soils contaminated by hexavalent chromium in Djelfa city (Algeria)
Authors: Hachi Mohamed , Hamidi Mohamed , Touati Mostefa , Berrabah Yasmina , Korichi Ayoub
Published: February 2022

This study aims to quantify hexavalent chromium in wastewater, plants and topsoil in Djelfa city (South of Algeria) in order to better understand the bioaccumulation and phytoremediation potential of eight spontaneous plant species growing in a polluted environment, namely Sisymbrium Irio, Spinacia oleracea, Avena Sativa, Silybum Eburneum, Euphorbia Bupleuroides, Thapsia Garganica, Hertia Cheirifolia and Marrubium Vulgare. Wastewater, soil and spontaneous plant samples were collected near Djelfa’s Oued Mellah valley. Spectrophotometric measurements of hexavalent chromium concentration were used to determine pollution levels and to assess the accumulation potential of studied spontaneous plants. The results showed that in wastewater, soil and plant samples, Cr(VI) concentrations near the tannery upstream were 0.6 mg/L, 44 mg/kg and 6.2 mg/kg respectively. The most significant bioaccumulation potential was recorded with Thapsia Garganica while the highest translocation factor (TF) was found in Marrubium Vulgare. These species could be considered as a promising phytoremediation solution for chromium-polluted soils. According to plant sample enrichment factor (EF), the roots of almost all tested plants were found to be more effective to accumulate Cr(VI) than shoots.
Katı Çiftlik Gübresine Farklı Kimyevi Gübre İlavesinin Bazı Besin Elementlerinin Suda Çözünürlüğü Üzerine Etkisi
Authors: ÖNER Nureddin , ÖNER Filiz
Published: February 2022

Laboratuvar koşullarında saksılarda yapılan bu araştırma üç tekerrürlü olarak yürütülmüştür. Fermente olmamış hayvan dışkılarına ve hayvanların altına serilen yataklıktan oluşan katı taze büyükbaş katı çiftlik gübresine kontrol, %5, %10, %20 ve %40 olmak üzere beş farklı oranda 15-15-15-Zn gübresi, 20-20-0+Zn gübresi, DAP gübresi (18-46), MAP (12-61-0) ve Üre (46-0-0) gübresi uygulanmıştır. Uygulanan kimyevi gübrenin homojen olması için öğütülmüş sonrada orijinal nemiyle katı çiftlik gübresine ilave edilmiş, iyice karıştırıldıktan sonra ilk hafta günde iki defa daha sonraki günlerde 2 günde bir defa olacak şekilde karıştırılarak oksijenli fermantasyona tabi tutulmuştur. Oksijenli fermantasyon için çok önemli olan ve %50-60 düzeyinde olması gereken nem miktarı için her saksı tartılarak saf su ilave edilmiştir. Fermantasyona tabi tutulan organik gübre + kimyevi gübre karışımından 2. ve 60. günlerde örnekler alınarak suda çözünebilir fosfor (P), kalsiyum (Ca), magnezyum (Mg), sodyum (Na), bakır (Cu), demir (Fe), mangan (Mn) ve çinko (Zn) elementleri içeriğine etkisi belirlenmiştir.

Araştırma sonuçlarına göre fermente olmamış katı taze katı çiftlik gübresine %5, %10, %20 ve %40 oranda ilave edilen 15-15-15-Zn, 20-20-0+Zn, DAP (18-46), MAP (12-61-0) ve Üre (46-0-0) ilavesinden sonra katı çiftlik gübresinde suda çözünebilir fosfor (P), kalsiyum (Ca), magnezyum (Mg), sodyum (Na), bakır (Cu), demir (Fe), mangan (Mn) ve çinko (Zn) elementleri miktarı üzerine etkisi zaman (2. ve 60. gün), gübre dozu (kontrol, %5, %10, %20 ve %40) ve zaman x gübre dozu interaksiyonu p
ANALISIS ESTETIKA VISUAL SENI LUKIS PADA KARYA PESERTA DIDIK KELAS III SEKOLAH DASAR
Authors: Probosiwi Probosiwi , Ardiyanti Wahyu Wulan
Published: February 2022

AbstractThe purpose of this paper is to describe the visual aesthetics of the third-grade students' painting based on lines, colors, shapes, and gradations, as well as to explain the type of painting. The method used is a qualitative type with a descriptive approach. Data collection techniques were carried out by means of observation, interviews, and document review. The results showed that based on the elements of fine art, the work of students had their beauty based on the perspective of each person who saw it, and there were various types of paintings by students. Still, the types of paintings that often appeared in the lower classes were naturalistic and transparency types. by following under the characteristics of lower-class students. Keywords: Painting, Visual Aesthetics, Children Painting Type. AbstrakTujuan penulisan ini adalah untuk mendeskripsikan estetika visual karya seni lukis peserta didik kelas III berdasarkan garis, warna, bentuk, dan gradasi serta menjelaskan tipe lukisan. Metode yang digunakan menggunakan jenis kualitatif dengan pendekatan deskriptif. Teknik pengumpulan data dilakukan dengan cara observasi, wawancara, dan telaah dokumen. Hasil penelitian menunjukkan berdasarkan unsur-unsur seni rupa, karya peserta didik memiliki keindahannya masing-masing berdasarkan sudut pandang setiap orang yang melihatnya, serta terdapat tipe lukisan peserta didik yang beragam, namun tipe lukisan yang sering muncul di kelas bawah adalah tipe naturalistik dan tipe transparansi yang sesuai dengan karakteristik peserta didik kelas bawah. Kata Kunci: Seni Lukis, Estetika, Tipe Lukisan Anak.
IMPLEMENTASI PEMBELAJARAN ABAD 21 MELALUI KERANGKA COMMUNITY OF INQUIRY DENGAN MODEL THINK PAIR SHARE
Authors: Arianti Nila , Pramudita Dias Aziz
Published: February 2022

21st century education is expected to produce human resources who have critical, creative, communicative, and collaborative thinking skills. The education system in Indonesia must be able to adapt to equip students with the required competencies. One of the right steps to support the mastery of 21st century skills is to apply the Community of Inquiry learning framework with the Think Pair Share model. The purpose of the research in this article is two. 1) Review the concept of the Community of Inquiry framework and the Think Pair Share learning model. 2) Describe the application of 21st century learning through the Community of Inquiry framework with the Think Pair Share model. The research method used is the qualitative method. Data collection techniques use observation, documentation, and interviews. The results of the research in this article are two, namely 1) Knowing the concept of the Community of Inquiry framework and the Think Pair Share learning model. 2) Application of 21st century learning through the Community of Inquiry framework with the Think Pair Share model.AbstrakPendidikan abad 21 diharapkan dapat menghasilkan sumber daya manusia yang memiliki keterampilan berpikir kritis, kreatif, komunikatif, dan kolaboratif. Sistem pendidikan di Indonesia harus mampu beradaptasi untuk membekali siswa dengan kompetensi yang dibutuhkan. Salah satu langkah yang tepat dilakukan untuk menunjang penguasaan keterampilan abad 21 yaitu dengan menerapkan kerangka pembelajaran Community of Inquiry dengan model Think Pair Share. Tujuan penelitian pada artikel ini ada dua. 1) Mengkaji konsep kerangka Community of Inquiry dan model pembelajaran Think Pair Share. 2) Mendeskripsikan penerapan pembelajaran abad 21 melalui kerangka Community of Inquiry dengan model Think Pair Share. Metode penelitian yang digunakan ialah metode kualitatif. Teknik pengumpulan data menggunakan observasi, dokumentasi, dan wawancara. Hasil penelitian pada artikel ini ada dua yaitu 1) Mengetahui konsep kerangka Community of Inquiry dan model pembelajaran Think Pair Share. 2) Penerapan pembelajaran abad 21 melalui kerangka Community of Inquiry dengan model Think Pair Share.
IPS/Zeta correspondence
Authors: Komatsu Takashi , Konno Norio , Sato Iwao
Published: February 2022

Our previous works presented zeta functions by the Konno-Sato theorem or the Fourier analysis for one-particle models including random walks, correlated random walks, quantum walks, and open quantum random walks. This paper introduces a new zeta function for multi-particle models with probabilistic or quantum interactions, called the interacting particle system (IPS). We compute the zeta function for some tensor-type IPSs.
Synthesis and styrene copolymerization of novel phenoxy ring-substituted isopropyl phenylcyanoacrylates
Authors: Whelpley Paige M. , Zepeda Jose L. , Schjerven William S. , Rocus Sara M , Kharas Gregory B.
Published: February 2022

Phenoxy ring-substituted isopropyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH(CH3)2, where R is 2-(3-methoxyphenoxy), 2-(4-methoxyphenoxy), 3-(4-methoxyphenoxy), 3-(4-methylphenoxy), 4-(4-bromophenoxy), 4-(4-fluorophenoxy), 2-(4-chlorophenoxy), 3-(4-chlorophenoxy), 4-(3-chlorophenoxy), 4-(4-chlorophenoxy), 3-(3,4-dichlorophenoxy), 3-(3,5-dichlorophenoxy), 4-(2,4-dichlorophenoxy) were prepared and copolymerized with styrene. The acrylates were synthesized by the piperidine catalyzed Knoevenagel condensation of phenoxy ring-substituted benzaldehydes and isopropyl cyanoacetate, and characterized by CHN analysis, IR, 1H and 13C-NMR. All the acrylates were copolymerized with styrene in solution with radical initiation at 70C. The compositions of the copolymers were calculated from nitrogen analysis and the structures were analyzed by IR, 1H and 13C-NMR. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 129-500ºC range with residue (2-10% wt.), which then decomposed in the 500-800ºC range.
Concvar: A computer program for simulating concentration variation of complex chemical reactions
Authors: Lu Tian
Published: February 2022

Concentration variation of chemical substances in complex reactions is of great chemical interest, because many valuable information about reaction, such as half-life time, dependency of reaction rate on barriers, main product of competitive reactions, the order of appearance of various substances, can be directly studied by examining time-dependent concentrations. In this article, we introduce the concvar program recently developed by us, which aims at studying variation of concentrations of various chemical substances in complex reactions over reaction time by numerically solving chemical kinetics equations, only linking relationship and free energies of all minima and transition states in energy profile of the studied reaction are needed as input. Concvar is easy to use, flexible, and significant for both practical research and physical chemistry teaching. We hope concvar will provide help for chemists in better understanding chemical reactions from the perspective of concentration change. Executable files and a detailed manual of concvar can be freely downloaded at http://sobereva.com/soft/concvar.
Effective Interventions for Improving Functional Movement Screen Scores Among “High-Risk” Athletes: A Systematic Review
Authors: Clark Sean C. , Rowe Nicholas D. , Adnan Mohamed , Brown Symone M. , Mulcahey Mary K.
Published: February 2022

Background

The Functional Movement ScreenTM (FMSTM) is a tool designed to screen a series of movements that aids in the identification of compensatory fundamental movement patterns, functional limitations, and asymmetrical movement patterns. A previous systematic review and meta-analysis has shown that athletes with an FMSTM score <13-14 are considered “high-risk” and are more likely to be injured. There are discrepancies regarding the efficacy of physical intervention programs in improving FMSTM scores.

Purpose

The aim of this systematic review was to assess the role of physical intervention programs in increasing functional movement in “high-risk” athletes as measured by the FMSTM.

Study Design

Systematic Review

Methods

A computerized search was performed in 2019 according to PRISMA guidelines searching Embase, Science Direct, Ovid, and PubMed. The studies were assessed for quality and risk of bias using the Modified Downs and Black checklist. Participant demographics, intervention routines, and FMSTM scores were extracted from the included studies.

Results

Six studies met the inclusion criteria and demonstrated a fair methodological quality. Comparisons across all studies revealed significant improvement in FMSTM scores following implementation of a variety of physical intervention programs. These programs included those that utilized functional training, foot muscle strengthening, Pilates, core stability training, and resistance movements. Despite variations in the corrective exercises performed, the number of training sessions, and the length of the intervention program, all studies demonstrated an increase in the total FMSTM score following program implementation.

Conclusion

The included intervention programs significantly improved total FMSTM scores in “high-risk” athletes. Despite variations in the corrective exercises (interventions) performed, the number of training sessions, and the length of the program, all studies demonstrated a significant increase in the total FMSTM score following program implementation.
Performance on a Motor Control Test in an Asymptomatic Adolescent Population
Authors: Lindegren Kari , Bastian Kristin , Kovacs Christopher , McHugh Robyn , Quatman-Yates Catherine , Paterno Mark
Published: February 2022

Background

Low back pain is a condition present during both adulthood and adolescence. Adolescents with low back pain may benefit from treatment focused on improving abdominal muscle performance and motor control. The supine double leg lowering test (SDLLT) may be a reliable measure to assess core stability in adults, but adolescent performance on the SDLLT has not yet been established in the literature.

Purpose

To examine performance on the SDLLT in healthy adolescents ages 13 to 18 years and describe influences of gender, age, body mass index, and participation in sport.

Study Design

Cross-Sectional Study

Methods

Four licensed physical therapists administered the SDLLT with a Stabilizer pressure biofeedback cuff and inclinometer in 90 adolescents without low back pain (females = 41, males = 49) from three schools in a mid-western metropolitan area. Descriptive statistics, independent sample t-tests, two-way analysis of variance, and Pearson correlation coefficients were utilized to analyze the data.

Results

Average SDLLT score was 72.36 +/- 12.54 degrees. A significant difference between SDLLT score was present between genders with males performing better than females. No interactions between performance and involvement in sport were demonstrated.

Conclusions

Female and male adolescents appear to perform differently on the SDLLT with a stabilizer and appear to perform worse than scores recorded for adults. The SDLLT may be used to measure motor control in adolescents, but clinicians should utilize age-appropriate data for clinical decision making.

Levels of Evidence

Level 2c
Test-Retest Reliability of the Isometric Soleus Strength Test in Elite Male Academy Footballers
Authors: Rhodes David , Jeffery Josh , Brook-Sutton Daniel , Alexander Jill
Published: February 2022

BACKGROUND

Currently there is no reliability data available for the isometric soleus strength test (ISST), commonly used as a monitoring tool in elite football settings. Isometric strength testing for other muscle groups, most notably the hamstrings, is utilized to identify injury risk and readiness to train/play. To profile athletes efficiently, performance practitioners require optimal measures that are reliable. The aim of this study was to investigate the test-retest reliability of the isometric strength test of the soleus and propose a standardized protocol for its use within an elite male football population.

STUDY DESIGN

Test-retest reliability single cohort study.

METHODS

Thirty elite male footballers (age = 22.8±5.0 years, height = 180.0±0.08 cm, weight = 70.57±4.0 kg) performed the ISST, through three maximum 3-second hold efforts with one minute rest between repetitions and 48 hours between tests, in each test. The test was performed mid-competitive season. All data bilaterally were checked for normality using the Shapiro-Wilk test before a Pearson’s Correlations and Bland-Altman’s analyses were performed.

RESULTS

Test-retest reliability demonstrated high reliability for ISST bilaterally (Right: r = 0.89; Left: r = 0.79, p<0.05). The standard error of measurement (SEM) (%) was 9.09 - 12.47% and minimal detectable change (MDC) was 25.19 – 34.56 (N) for Peak Force (PF) measures of the ISST. Bilateral levels of agreement were found to be +/- 2 standard deviations (SD) of the interval of agreement bilaterally for ISST (Levels of agreement (LOA): Right: Upper 352.49 - Lower -494.76; Left: Upper 523.82 - Lower -591.30. Bilaterally no significant difference was detected between values (Right: p=0.09, CI: -153.21-10.95; Left: p=0.52, CI: -139.81-72.33).

CONCLUSION

The results of this study demonstrate high reliability for the ISST. The ISST displays a high test-retest reliability for assessing PF characteristics of the soleus in elite male academy footballers. This test may be beneficial for performance practitioners for profiling soleus function of athletes.
Concurrent Validity and Reliability of Two-dimensional Frontal Plane Knee Measurements during Multi-directional Cutting Maneuvers
Authors: Irawan Dimas Sondang , Huoth Chantheng , Sinsurin Komsak , Kiratisin Pongthanayos , Vachalathiti Roongtiwa , Richards Jim
Published: February 2022

Background

Excessive knee valgus has been strongly suggested as a contributing key factor for anterior cruciate ligament (ACL) injuries. Three-dimensional (3D) motion analysis is considered the “gold standard” to assess joint kinematics, however, this is difficult for on-field assessments and for clinical setting.

Purpose

To investigate the concurrent validity of 2D measurements of knee valgus angle during cutting in different directions and to explore intra-rater and inter-rater reliability of the 2D measurements.

Study Design

Descriptive laboratory study

Method

Seven recreational soccer players participated in this study. Participants performed three trials of cutting maneuvers in three different directions (30º, 60º, and 90º) with the dominant leg. Cutting maneuvers were recorded simultaneously with a video camera and a ViconTM motion capture system. Knee valgus angle from 2D and 3D measurements at initial contact and at peak vertical ground reaction force (vGRF) were extracted. The Pearson’s correlation was used to explore the relationship between the 2D and 3D measurements, and reliability of the 2D measurements were performed using intraclass correlation coefficients (ICC).

Result

Significant correlations between 2D and 3D knee valgus measurements were noted for 60º (r = 0.45) and 90º (r = 0.77) cutting maneuvers at initial contact. At peak vGRF, significant correlations between 2D and 3D knee valgus measurements were noted for 30º, 60º, and 90º cutting maneuvers (r=0.45, r=0.74, r=0.78), respectively. Good-to-excellent intra-rater and inter-rater reliability of the 2D knee valgus measurements was observed during cutting in all directions (ICCs: 0.821-0.997).

Conclusion

Moderate-to-strong correlation between 2D and 3D knee valgus measurements during 60°-90° cutting maneuvers, and good-to-excellent intra-rater and excellent inter-rater reliability for the 2D measurements in the present study supports the use of 2D knee valgus measurements in the evaluation of targeted interventions, although the limitations of examining cutting maneuvers using 2D measurement in complex movement still need to be considered.

Level of Evidence

3
Analysis of Calcaneal Bone Mineral Density (cBMD) in Healthy College Students
Authors: Bennett Jason E. , Austin Tricia M. , Hayes Ann M. , Reinking Mark F.
Published: February 2022

Background

There is limited evidence describing the relationship between calcaneal bone mineral density (cBMD) and activity level, menstrual history, or the development of bone stress injury (BSI).

Hypothesis/Purpose

The purposes of this study were to: 1) examine the influence of physical activity on cBMD in healthy college students (HCS), 2) determine if there is an association between cBMD, body mass index (BMI), sex, menstrual history, and history of BSI in HCS, and 3) compare the cBMD of HCS to cBMD data collected on intercollegiate athletes (ICA) from a previous study.

Study Design

Cross-sectional design

Methods

This cross-sectional study recruited a convenience sample of HCS at one institution. Subjects provided self-reported injury and menstrual history, completed a physical activity questionnaire, and cBMD and BMI measures were obtained. Descriptive statistics, statistical analyses of relationships (Chi-square and relative risk), logistic regression, and differences (t-tests) were used in the statistical analyses.

Results

One hundred three HCS (82 female, 21 male; age 21.9 ± 1.13) consented to participate. The composite score for work, leisure, and sport activity ranged from 5.6 to 11.1 (7.9 ± 1.1) for HCS subjects. There was no significant correlation between cBMD and physical activity in HCS, however, a significant correlation was found between reported age of onset of menstruation and left and right cBMD (r = -0.22 and r = -0.23; p < 0.05) and history of secondary amenorrhea and history of BSI (r = 0.32; p < 0.05). There was no difference in cBMD between the male ICA and male HCS, but highly significant differences in cBMD between the female ICA and female HCS groups (p < 0.000).

Conclusions

Age of menarche and secondary amenorrhea are significantly associated with cBMD and history of BSI in HCS subjects, respectively. Differences in cBMD among the HCS subjects were not related to activity level. cBMD was significantly lower in female HCS as compared to female ICA. This difference in cBMD between ICA and HCS may be activity related.

Level of Evidence

Level 3
Musculoskeletal Imaging for Low Back Pain in Direct Access Physical Therapy Compared to Primary Care: An Observational Study
Authors: Crowell Michael S , Mason John S , McGinniss John H
Published: February 2022

Background

Overutilization of diagnostic imaging is associated with poor outcomes and increased costs. Physical therapists demonstrate the ability to order diagnostic imaging safely and appropriately, and early access to physical therapy reduces unnecessary imaging, lowers healthcare costs, and improves outcomes.

Hypothesis/Purpose

The primary purpose of this study was to compare rates of compliance with the National Committee for Quality Assurance – Healthcare Effectiveness Data and Information Set (HEDIS) recommendations for diagnostic imaging in low back pain between physical therapists and primary care providers in young, athletic patients.

Study Design

Retrospective cohort study.

Methods

Military Health System Data Repository (MDR) data from January 2019 to May 2020 was reviewed for compliance with the low back pain HEDIS recommendation. The low back pain imaging HEDIS measure identifies the percentage of patients who did not have an imaging study (plain X-ray, MRI, CT Scan) ordered on the first encounter with a diagnosis of low back pain or in the 28 days following that first diagnosis. Chi-square tests compared HEDIS compliance rates, with α = 0.05 set a priori.

Results

From January 2019 to May 2020, in patients age 18-24, the MDR database identified 1,845 total visits for LBP identified in the Physical Therapy Clinic and 467 total visits for LBP in the Primary Care Clinic. In the Physical Therapy Clinic, 96.7% of encounters did not have imaging ordered within the first 28 days of onset of symptoms, compared with 82.0% in the Primary Care Clinic (p < .001).

Conclusions

Utilizing data from a national standardized healthcare performance measure, physical therapists practicing in a direct-access setting were significantly more likely than primary care providers to adhere to guidelines for low back pain imaging in young, athletic patients.

Level of Evidence

Level 3.
Current Views of Scapular Dyskinesis and its Possible Clinical Relevance
Authors: Sciascia Aaron , Kibler W. Ben
Published: February 2022

Scapular dyskinesis is a condition that is frequently observed clinically but not often understood. Too often it is viewed as a diagnosis which is not accurate because it is a physical impairment. This misclassification of dyskinesis has resulted in literature that simultaneously supports and refutes scapular dyskinesis as a relevant clinical entity as it relates to arm function. These conflicting views have not provided clear recommendations for optimal evaluation and treatment methods.

The authors’ experience and scholarship related to scapular function and dysfunction support that scapular dyskinesis is an impairment that has causative factors, that a pathoanatomical approach should not be the primary focus but should be considered as part of a comprehensive examination, that a qualitative examination for determining the presence or absence of a scapular contribution to shoulder dysfunction is currently the best option widely available to clinicians, and that rehabilitation approaches should be reconsidered where enhancing motor control becomes the primary focus rather than increasing strength.
Patellofemoral Joint Loading During the Performance of the Forward and Side Lunge with Step Height Variations
Authors: Escamilla Rafael , Zheng Naiquan , MacLeod Toran D , Imamura Rodney , Wilk Kevin E. , Wang Shangcheng , Rubenstein Irv , Yamashiro Kyle , Fleisig Glenn S.
Published: February 2022

Background

Forward and side lunge exercises strengthen hip and thigh musculature, enhance patellofemoral joint stability, and are commonly used during patellofemoral rehabilitation and training for sport.

Hypothesis/Purpose

The purpose was to quantify, via calculated estimates, patellofemoral force and stress between two lunge type variations (forward lunge versus side lunge) and between two step height variations (ground level versus 10 cm platform). The hypotheses were that patellofemoral force and stress would be greater at all knee angles performing the bodyweight side lunge compared to the bodyweight forward lunge, and greater when performing the forward and side lunge at ground level compared to up a 10cm platform.

Study Design

Controlled laboratory biomechanics repeated measures, counterbalanced design.

Methods

Sixteen participants performed a forward and side lunge at ground level and up a 10cm platform. Electromyographic, ground reaction force, and kinematic variables were collected and input into a biomechanical optimization model, and patellofemoral joint force and stress were calculated as a function of knee angle during the lunge descent and ascent and assessed with a repeated measures 2-way ANOVA (p<0.05).

Results

At 10° (p=0.003) knee angle (0° = full knee extension) during lunge descent and 10° and 30° (p<0.001) knee angles during lunge ascent patellofemoral joint force and stress were greater in forward lunge than side lunge. At 40°(p=0.005), 50°(p=0.002), 60°(p<0.001), 70°(p=0.006), 80°(p=0.005), 90°(p=0.002), and 100°(p<0.001) knee angles during lunge descent and 50°(p=0.002), 60°(p<0.001), 70°(p<0.001), 80°(p<0.001), and 90°(p<0.001) knee angles during lunge ascent patellofemoral joint force and stress were greater in side lunge than forward lunge. At 60°(p=0.009) knee angle during lunge descent and 40°(p=0.008), 50°(p=0.009), and 60°(p=0.007) knee angles during lunge ascent patellofemoral joint force and stress were greater lunging at ground level than up a 10cm platform.

Conclusions

Patellofemoral joint loading changed according to lunge type, step height, and knee angle. Patellofemoral compressive force and stress were greater while lunging at ground level compared to lunging up to a 10 cm platform between 40° - 60° knee angles, and greater while performing the side lunge compared to the forward lunge between 40° - 100° knee angles.

Level of Evidence

II
Improvement of the Mechanical Behavior of an Environmental Concrete Based on Demolished Concrete Waste and Silica Fume
Authors: Kessal Oussama , Belgraa Larbi , Djebri Noura , Salah Soumia , Allal Zineb
Published: February 2022

The universal need to conserve resources, protect the environment, and use energy efficiently must necessarily be felt in the field of concrete technology. In Algeria, the rapid growth in the construction sector and the difficulties in setting up new quarries make it necessary to find effective alternatives to use them as building materials. The recycling of construction and demolition waste as a source of aggregates for the production of concrete has attracted growing interest from the construction industry. In this context, this work is a part of the approach to provide answers to concerns about the lack of aggregates for concrete. It also aims to develop the inert fraction of demolition materials, mainly concrete construction demolition waste (C&D), as a source of aggregates for the manufacture of new hydraulic concrete based on recycled aggregates. This experimental study presents the results of physical and mechanical characterizations of natural and recycled aggregates, as well as their influence on the properties of fresh and hardened concrete. The characterization of the materials used has shown that the recycled aggregates have heterogeneity, a high-water absorption capacity, and medium-quality hardness. However, the limits prescribed by the standards in force do not disqualify these materials from use for application as recycled aggregate concrete. The effect of silica fume and superplasticizer percentage on the mechanical and physical properties of concrete with NA and RA was analyzed and optimized using full-factorial design methodology. The results obtained from the present study show acceptable mechanical, compressive, and flexural strengths of concrete based on recycled aggregates by using Superplasticizer and 5% of silica fume, compared to those with natural aggregates. The results of the water absorption as well as the UPV confirm the positive effect of the use of superplasticizer and silica fume on the physical and mechanical behavior of concrete with recycled aggregates. Factorial design analysis shows that the developed mathematical models can be used to predict the physical and mechanical properties of concrete with RAC, superplasticizer, and silica fume. Doi: 10.28991/CEJ-2022-08-02-04 Full Text: PDF
Assessment and Evaluation of IWRM Implementation in Palawan, Philippines
Authors: Cacal Jennifer C. , Taboada Evelyn B.
Published: February 2022

According to the United Nation's Sustainable Development Goal (SDG 6), the world needs to sustainably manage water resources through integrated water resource management (IWRM). The Philippines is committed to this goal by ensuring the implementation of IWRM at all levels. Concurrently, there is growing evidence that there is presently no consolidated data on the status of implementation at the sub-national level. With water shortages on the increase, it's more important than ever to find solutions to settle disputes and trade-offs so that water can be distributed effectively, sustainably, and equally. This paper aims to investigate the degree of implementation of IWRM that presents the actual state of affairs in terms of water management at the sub-national level. This study is focused on Palawan Province, with the following sites: Puerto Princesa City, El Nido, Roxas, and Taytay. A structured survey questionnaire was drawn up in accordance with the existing questionnaire developed for this purpose. The obtained data were computed using the steps developed for calculating the indicators of IWRM implementation degree. Puerto Princesa City, El Nido, Roxas, and Taytay have the following IWRM ratings: 39.93, 32.03, 37.99, and 36.32%, respectively, which means "medium-low" in which the IWRM components have largely been institutionalized, and deployment is well underway. In these regions, a subnational water management scheme exists, but its maximum capacity is mostly unrealized due to numerous constraints. The findings show that the numerous water laws are confusing and that water data for planning purposes is lacking. Even though there are many water agencies, they are not interconnected. This study is useful for successful IWRM implementation, which should encourage sustainable water resource management for environmental sustainability. Integrated methods for water resource management help to organize sustainable growth by assessing how water is handled in agriculture, urban applications, and the surrounding ecosystems. Doi: 10.28991/CEJ-2022-08-02-08 Full Text: PDF
The Performance of a Cross-flow Turbine as a Function of Flowrates and Guide Vane Angles
Authors: Adeyanju Anthony A. , Manohar K.
Published: February 2022

This study looked at the effects of flow rates and guide vane angles on the performance of a cross flow turbine, which can be used to generate energy and hydraulic power with low head and low flow rates of water. A fluid dynamic analysis was performed on the cross-flow turbine with the aid of finite element techniques. The simulation was solved after validating the convergence of the provided model and its boundary conditions, with the outputs being the velocity profiles of the flow in the rotor and the pressure distribution on the rotor surface during its rotations. Experimental evaluation of the cross-flow turbine guide vane positions at a flow rate of 0.8, 0.6, and 0.5 m3/s was conducted, and it was discovered that a maximum turbine speed of 482 rpm and a generator speed of 1920 rpm were produced at the rotor shaft at a flow rate of 0.8 m3/s with a head of 25 m, and this data was validated by the results produced from the simulation. Doi: 10.28991/HIJ-2022-03-01-06 Full Text: PDF
Evaluation and Optimization of the Aerodynamic Noise Reduction of Vehicle Side View Mirrors: Experimental and Numerical Study
Authors: Gohari Mohammad , Norozi Rasoul , Hajizadeh Aghdam Abolfazl
Published: February 2022

Automobile passengers are usually sensitive to the noises generated by the engine and vehicle body. One of the noise sources is the generated turbulent flow around the Vehicle Side View Mirror (VSVM) and around the A-pillar, producing fluctuating pressure. Unwanted noise is a result of fluctuating pressure around the car's body. Modification of the geometry of the vehicle body may affect the generated noise by turbulent flow. In this paper, the original side view mirror of a small sedan car named Tiba was aimed at geometry modification to decrease airborne noise. The mirror was assessed by CFD simulation and an outdoor test. Road tests were applied at three forward speeds (80, 100, and 120 km/h) to measure the sound level generated by the vehicle's side mirrors. Then, the geometry of VSVM was modified to diminish the sound pressure level of that based on decreasing turbulent flow and fluctuating pressure around the side mirror. Finally, the achieved geometry was evaluated using road tests, which showed a noise reduction of 8 to 12%. Road tests were done for the modified side car mirror. It shows that a modified mirror can reduce the sound level of airborne noise. By using this suggested modified side view mirror, the risk of annoying noise may be diminished and passenger comfort ability can be increased through driving. Doi: 10.28991/HIJ-2022-03-01-08 Full Text: PDF
SERBIAN AND CROATIAN VOCABULARY FROM AREALOGICAL POINT OF VIEW
Authors: Yakushkina Ekaterina
Published: February 2022

The research is devoted to the geographical distribution of Serbian and Croatian dialect vocabulary. The research is based on field and dictionary material, as well as on the materials of the Slavic Linguistic Atlas. It is intended for specialists in Slavic linguistics and students.
CONCEPTUAL ASPECTS OF FINANCIAL SECURITY FOR FORECASTING THE FISCAL BALANCE OF REGIONAL DEVELOPMENT
Authors: Kulagina Natalya , Rodionov Dmitry , Galazova Marina
Published: February 2022

This scientific article reveals the role of financial security in providing targets for the development of regions in the context of modern challenges and threats. It is concluded that the level of financial security is achieved with a balanced budget of the subjects of the federation, which requires taking into account a significant set of both objective and subjective factors. On the example of one of the regions of the Central Federal District, an analysis of the tax potential was carried out and a set of directions for the development of tax administration was determined to achieve long-term development indicators, which made it possible to forecast the revenue and expenditure base of the budget in order to increase the level of budget security
Aplicación del método de flujo fraccional para recuperación secundaria en el campo Palo Azul
Authors: Mena-Villacís Franklin Luis , Hurtado-Zurita Jorge Fernando , Chávez-Carrera Darwin Alfredo
Published: February 2022

Aplicando la teoría de Buckley-Leverett se presentan los resultados obtenidos en la recuperación secundaria del reservorio Basal Tena del campo Palo Azul operado por EP PETROECUADOR. Principalmente el detalle del estudio se determinó el incremento del factor de recobro de petróleo en el reservorio Basal Tena mediante el cálculo de Buckley-Leverett. El proceso del estudio fue constituido: primer paso, se identificó el área en estudio donde exista continuidad del reservorio. Segundo paso, se realizó un análisis de declinación de presión en los pozos productores del sector norte del reservorio Basal Tena, evidenciando claramente la caída de presión, deduciendo que el mecanismo principal de producción en el reservorio Basal Tena es la expansión de roca y fluido. El tercer paso fue el desarrollo de la teoría de Buckley-Leverett, con la inyección de agua se determinó un factor de recobro de 14% que son 3.5 millones de barriles de petróleo. El trabajo se pudo concluir que la inyección de agua tiene un efecto en el incremento del factor de recobro con respecto a las reservas remanentes en 4.55%.