bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH PEMBELAJARAN KOOPERATIF TIPE STAD DAN GI TERHADAP PENINGKATAN KEMAMPUAN KONEKSI MATEMATIK SISWA SEKOLAH DASAR
Authors: M.Pd Fadhilaturrahmi 
Published: April 2019

<p>Penelitian ini bertujuan untuk melihat pengaruh pembelajaran kooperatif tipe STAD dan GI terhadap peningkatan kemampuan koneksi matematik siswa sekolah dasar. Penelitian ini merupakan penelitian kuasi eksperimen, dengan desain yang digunakan adalah â€œ<em>pretest-posttest two treatman design</em>â€. Populasi sekaligus sebagai sampel dalam penelitian ini adalah seluruh siswa kelas V Sekolah dasar di sekolah dasar Ibnu Sina kabupaten Bandung. Instrumen yang digunakan dalam pengumpulan data adalah tes koneksi matematik bentuk uraian. Hasil penelitian menunjukkan bahwa pembelajaran matematika baik pembelajaran kooperatif tipe STAD maupun tipe GI sama-sama memiliki pengaruh dalam peningkatan kemampuan koneksiÂ matematik siswa sekolah dasar. Jika ditinjau berdasarkan kategori kemampuan siswa, kemampuan koneksi kelompok tinggi dengan pembelajaran GI sama baiknya dengan kemampuan koneksi kelompok tinggi pada pembelajaran STAD. Kemampuan koneksi kelompok sedang dengan pembelajaran GI lebih baik daripada kemampuan koneksi kelompok sedang pada pembelajaran STAD.Begitu juga pada kemampuan koneksi kelompok rendah dengan pembelajaran GI sama baiknya dengan kemampuan koneksi kelompok rendah pada pembelajaran STAD. Berdasarkan hasil penelitian tersebut, maka pembelajaran matematika dengan pembelajaran kooperatif baik tipe STAD maupun tipe GI dapat dijadikan sebagai salah satu pembelajaran yang dapat diterapkan dalam upaya meningkatkan kemampuan siswa khususnya kemampuan koneksi matematik siswa sekolah dasar.</p>
In vitro cytotoxicity of different thermoplastic materials for clear aligners
Authors: Martina Stefano , Rongo Roberto , Bucci Rosaria , Razionale Armando Viviano , Valletta Rosa , D'Antò Vincenzo 
Published: April 2019

ABSTRACT

Objectives:
To investigate the in vitro cytotoxicity of different thermoplastic materials for clear aligners on human primary gingival fibroblasts (HGFs).

Materials and Methods:
Four materials for clear aligners were considered in this study: Duran (Scheu-Dental GmbH, Iserlohn, Germany), Biolon (Dreve Dentamid GmbH, Unna, Germany), Zendura (Bay Materials LLC, Fremont, CA, USA), and SmartTrack (Align Technology, San Jose, CA, USA). Three out of four materials (Duran, Biolon, Zendura) were assessed as thermoformed and nonthermoformed, whereas the SmartTrack was assessed only as thermoformed. The samples were placed at 37°C in airtight test tubes containing Dulbecco's Modified Eagle's Medium (DMEM; 0.1 mg/mL) for 14 days. The cell viability of HGFs cultured with this medium was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Data were analyzed by means of one-way and two-way analysis of variance and post hoc tests (α = 0.05).

Results:
Each material exhibited a slight cytotoxic effect after 14 days. The highest cytotoxicity level on HGFs was achieved by Biolon (64.6% ± 3.3 of cell viability), followed by Zendura (74.4% ± 2.3 of cell viability), SmartTrack (78.8% ± 6.3 of cell viability), and finally Duran (84.6% ± 4 of cell viability), which was the least cytotoxic. In the comparison between nonthermoformed and thermoformed materials for Duran, Biolon, and Zendura, the thermoformed materials showed the highest level of cytotoxicity (P &lt; .001).

Conclusions:
Under the experimental conditions of this study, all the materials for clear aligners presented a slight cytotoxicity. Biolon was the most cytotoxic and the thermoforming process increased the cytotoxicity of the materials.
The Influence of Serious Attitude In Work towards Business Success (Metro Muslim Entrepreneurs)
Authors: Murcitaningrum Suraya , Machsun Muhammad , Aliyu Gololo Ibrahim 
Published: April 2019

This paper discusses thei nfluence of seriousattitude in work towards business success of Muslim entrepreneurs as it is known that the seriousness in work can create business success. The purpose of this study is to identify and assess the effect of seriousness attitude in work toward the success of the Muslim entrepreneurs in Metro Regency of Lampung. This study is based on a literature study and understandings of the accumulation of various primary studies conducted on Muslim entrepreneurs around the Islamic Boarding School of Al Muhsin 28 Metro collected through questionnaires. The literature study was conducted to understand the concept of the seriousness in work. The results of the analysis showed that the significant value was 0.020. Since the value of α = 0.01, then the H0 was rejected if α was < 0.01. Based on the analysis, it can be concluded that there is a relation of seriousness in work of Muslim businessmen to business success in Metro Regency. Keywords : Serious Attitude ,Work towards Business Success, Muslim Entrepreneurs
The Debt-Equity Ratio Choice: Risk Sharing Instruments, A Viable Alternative
Authors: Muhammad Ahmad Shamsuddeen , Wan Omar Wan Ahmad Bin , Mat Junoh Mohd Zukime Bin 
Published: April 2019

Evidence has been documented in the literature that the interest based debt financing system is experiencing continuous discomfort. The outcome of the 2008 global financial crisis has further create fresh vigor to the assertion. Also, these authors have submitted that debt and leveraging are the two major causes of financial instability in the present system. This paper claims that the existence of the interest-based debt regime is becoming less acceptable, as excessive debt can affect the whole economic system, even in a developed country like United States. From an economic viewpoint, therefore, by banning interest rate-based contracts and decreeing exchange contracts, Islamic financeinspires risk sharing and prohibits risk transfer, risk shedding, and risk shifting. The paper proposes risk sharing based Islamic financing as a suitable alternative to the interest based debt financing. This study concludes that risk-sharing finance has several benefits, especially its potential to minimize, if not circumvent, the debt prompted financial crises that have beset the world..Keywords : Debt-Equity Ratio; Risk Sharing Instruments; Islamic Finance
Interpretation of the concept of “discount” in Technical Works Tenders
Authors: Metallinos Pavlos 
Published: April 2019

Abstract
The text deals with the concept of the discount submitted by a candidate contractor tendering for a public works project. In accordance with prevailing conceptions, the quantity of the discount is perceived as being the amount of monetary compensation the candidate building contractor is willing to forgo for the sake of emerging as the winner of the tender. The text argues on the contrary that the discount is an objectively measurable magnitude. Specifically it is equal to the algebraic difference of the absolute surplus value that could be appropriated by the public works contractor minus the quantity of relative surplus value by virtue of which he is able to recoup the amount of discount submitted in the tender.
The congruency between self and brand
Authors: Ningrum Nonik K. , Ayem Sri 
Published: April 2019

Abstract
The purpose of this study was to investigate the relationships between actual self congruence, brand attachment, brand involvement, and brand loyalty. This study applied quantitative explanatory research. Purposive random sampling was used as sampling technique. A number of 200 respondents, which have familiarity to a certain brand, was asked to fill in the questionnaire as primary survey data. The findings show that actual self-congruence significantly positive affects brand involvement, brand attachment, and brand loyalty. Future study should include ideal self-congruent to compare whether actual or ideal self-congruence which has a stronger correlation on brand involvement, attachment, and also brand loyalty. This study provides a basis for firms to have better understanding of actual self-congruence roles on building customer brand involvement, brand attachment, and also brand loyalty.
Silent Hypoglycemia in Patients with Diabetes
Authors: Clus Simona , Creteanu Gabriela , Popa Amorin 
Published: April 2019

Abstract

Introduction. Iatrogenic hypoglycemia increases cardiovascular morbidity sometimes even with fatalities, and also increases cognitive disorders in most people with type 1 diabetes (T1D) and type 2 diabetes (T2D). Hypoglycemia is characterized by unawareness if the sympathoadrenal response is attenuated during the night, in autonomic neuropathy or in elderly patients. Therefore, hypoglycemia is a limiting factor in the glycemic management of diabetes.

Methods. We aimed to analyze the hypoglycemic events and the time spent with low glucose level (glucose <3.9 mmol/l) in patients with diabetes (T1D, T2D) with insulin therapy (basal or basal-bolus), in ambulatory or hospital setting. The glucose variability was assessed via the interstitial glucose concentration, measured with a Continuous Glucose Monitoring (CGM) system over 72 hours.

Results. The incidence, severity and duration of hypoglycemia are not correlated with HbA1c, disease’s duration and patient’s age. In patients with T1D, severe hypoglycemia is more frequent in patients with a long duration of diabetes. In this analysis, the type of basal analog insulin did not influence the presence of hypoglycemia (p=0.7), but the duration of nocturnal hypoglycemia was longer with insulin glargine U100 than with insulin detemir. The basal regimen is more protective for hypoglycemia than basal-bolus insulin.

Conclusions. The study suggested that hypoglycemic events are common, silent and prolonged in 1/3 of patients with T1D and T2D. The CGM system is beneficial for all patients with T1D and for patients with T2D with hypoglycemic risk and complications, to adjust medication in order to prevent cardiovascular events.
Rapidly Progressive Glomerulonephritides, Diagnostic and Therapeutic Urgency
Authors: Buhoara Cristina , Penescu Mircea 
Published: April 2019

Abstract
Rapidly progressive glomerulonephritides are relatively rare but serious disorders of diverse etiology, which share some clinical features: rapid evolution, progressive to renal failure, often accompanied by oliguria or anuria. They are characterized histopathologically by an intense extracapillary proliferation, with the development of crescents (semilunar lesions) in over 50% of examined glomeruli. The following pathological entities are referred to as rapidly progressive glomerulonephritides: ANCA-positive pauci-immune vasculitides (microscopic polyangiitis, granulomatosis associated with microscopic polyangiitis, allergic granulomatosis associated with microscopic polyangiitis), extracapillary proliferative glomerulonephritides by immune complexes and glomerulonephritides by anti-glomerular basement membrane antibodies. Due to major histopathological and functional complications, their evolution to death or renal replacement therapy occurs within 6-2 months after the diagnosis, if they are not treated, but the evolution is favorably influenced by aggressive immunosuppression, whether or not associated with plasmapheresis.
Bank erosion of the Tŕstie stream: BANCS model predictions vs. real bank erosion
Authors: Allmanová Zuzana , Vlčková Mária , Jankovský Martin , Jakubis Matúš , Allman Michal 
Published: April 2019

Abstract
This paper focused on predicting the bank erosion through the Bank Assessment for Non-point source Consequences of Sediment (BANCS) model on the Tŕstie water stream, located in the western Slovakia. In 2014, 18 experimental sections were established on the stream. These were assessed through the Bank Erosion Hazard Index (BEHI) and the Near Bank Stress (NBS) index. Based on the data we gathered, we constructed two erosion prediction curves. One was for BEHI categories low and moderate, and one for high, very high, and extreme BEHI. Erosion predicted through the model correlated strongly with the real annual bank erosion – for low and moderate BEHI, the R2 was 0.51, and for high, very high and extreme BEHI, the R2 was 0.66. Our results confirmed that the bank erosion can be predicted with sufficient precision on said stream through the BANCS model.
Regionalizing time of concentration using landscape structural patterns of catchments
Authors: Amiri Bahman Jabbarian , Gao Junfeng , Fohrer Nicola , Adamowski Jan 
Published: April 2019

Abstract
There is an emerging challenge within water resources on how, and to what extent, borrowing concepts from landscape ecology might help re-define traditional concepts in hydrology in a more tangible manner.
A stepwise regression model was adopted in this study to assess whether the time of concentration of catchments could be explained by five landscape structure-representing metrics for land use/land cover, soil and geological patches, using spatial data from 39 catchments.
The models suggested that the times of concentration of the catchments could be predicted using the measures of four landscape structure-representing metrics, which include contiguity index (r
2 = 0.46, p ≤0.05), fractal dimension index (r
2
= 0.51, p ≤0.05), related circumscribing circle (r
2 = 0.52, p ≤0.05), and shape index (r
2 = 0.47, p ≤0.05).
The models indicated that the regularity or irregularity in land use/land cover patch shape played a key role in affecting catchment hydrological response. Our findings revealed that regularity and irregularity in the shape of a given patch (e.g., urban and semi-urban, rangeland and agricultural patches) can affect patch functions in retarding and/or increasing flow accumulation at the catchment scale, which can, in turn, decrease or increase the times of concentration in the catchments.
Assessing methods for the estimation of response times of stream discharge: the role of rainfall duration
Authors: Cuevas Jaime G. , Arumí José L. , Dörner José 
Published: April 2019

Abstract
Lagtimes and times of concentration are frequently determined parameters in hydrological design and greatly aid in understanding natural watershed dynamics. In unmonitored catchments, they are usually calculated using empirical or semiempirical equations developed in other studies, without critically considering where those equations were obtained and what basic assumptions they entailed. In this study, we determined the lagtimes (LT) between the middle point of rainfall events and the discharge peaks in a watershed characterized by volcanic soils and swamp forests in southern Chile. Our results were compared with calculations from 24 equations found in the literature. The mean LT for 100 episodes was 20 hours (ranging between 0.6–58.5 hours). Most formulae that only included physiographic predictors severely underestimated the mean LT, while those including the rainfall intensity or stream velocity showed better agreement with the average value. The duration of the rainfall events related significantly and positively with LTs. Thus, we accounted for varying LTs within the same watershed by including the rainfall duration in the equations that showed the best results, consequently improving our predictions. Izzard and velocity methods are recommended, and we suggest that lagtimes and times of concentration must be locally determined with hyetograph-hydrograph analyses, in addition to explicitly considering precipitation patterns.
Flow structure within a vegetation patch in a gravel-bed river
Authors: Jahadi Mahsa , Afzalimehr Hossein , Rowinski Paweł M. 
Published: April 2019

Abstract
Investigation of the interactions between submerged vegetation patch and flow structure is of crucial importance for river engineering. Most of hydraulic models have been presented for fully developed flows over uniform vegetation in the laboratory conditions; however, the mentioned interactions are complex in river flows where the flow is not developed along small patch. This reveals a gap between developed and non-developed flow along the vegetation patch. This study was conducted in a gravel-bed river in the central Iran. The results reveal that the flow structure in evolving flow (non-developed flow) along the patch resembles that in shallow mixing layer. Accordingly, a shallow mixing layer model and modified equations are combined to quantify evolving area along the patch. The evolving shallow mixing layer equations for the flow along a non-uniform vegetation patch reach a reasonable agreement with field data. However, the spreading coefficient of this model less than one was reported in literature, 0.06 and 0.12. In addition, the flow immediately downstream the vegetation patch behaves similar to a jet and is parameterized by two conventional models, conventional logarithmic law and mixing layer theory. These models present a reasonable agreement with the measured velocity profiles immediately downstream the patch.
Formation and movement of ice accumulation waves under ice cover –an experimental study
Authors: Wang Jun , Wu Yifan , Sui Jueyi , Karney Bryan 
Published: April 2019

Abstract
Ice jams in rivers often arise from the movement of frazil ice as cover-load under ice cover, a process which is conceptually similar to the movement of sediment as bed-load along a river bed. The formation and movement of an ice-accumulation wave is one facet of a larger class of cover-load movements. The movement of an ice-accumulation wave obviously plays a crucial role in the overall process of ice accumulation. In the present study, experiments under different flow and ice conditions help reveal the mechanics of formation and evolution of ice-accumulation waves. In particular, suitable criteria for formation of an ice-accumulation wave are investigated along with the resulting speed of wave propagation. The transport capacity of frazil ice under waved accumulation is modeled by comparing those of experiments collected in laboratories, and the resulting equation is shown to be in good agreement with measured experimental results.
Investigation of Wireless Channels of 802.11 Standard in the 5ghz Frequency Band
Authors: Mykhalevskiy Dmytro V. 
Published: April 2019

Abstract
The paper presents the study of wireless channel over-the-air channels of the family of 802.11х standards within the 5GHz frequency band, taking into account the influence of architectural obstacles within premises. The following parameters have been selected as the main parameters in the course of the study: an efficient rate of information transmission, signal power at the receiver input, as well as channel carrying capacity. As a result of the experimental study, the author has found out relevant mathematical expression for estimation of the efficiency criterion of wireless channels of the family of 802.11х standards for the 5GHz frequency band, taking into account relevant architectural obstacles within premises.
Electronic Processes in Solid State: Dirac Framework
Authors: Klotins E. 
Published: April 2019

Abstract
The present paper proposes canonical Dirac framework adapted for application to the electronic processes in solid state. The concern is a spatially periodic structure of atoms distinguished by birth and annihilation of particle states excited due to interaction with the electromagnetic field. This implies replacing the conventional energy-momentum relation specific of the canonical Dirac framework and permissible for particle physics by a case specific relation available for the solid state. The advancement is a unified and consistent mathematical framework incorporating the Hilbert space, the quantum field, and the special relativity. Essential details of the birth and annihilation of the particle states are given by an illustrative two-band model obeying basic laws of quantum mechanics, special relativity, and symmetry principles maintained from the canonical Dirac framework as a desirable property and as a prerogative for the study of the particle coupling and correlation.
Prevalence and Clinical Signs of Postpartum Dysgalactia Syndrome at The First Day after Farrowing in Farmed Sows in The Republic of Macedonia
Authors: Angjelovski Branko , Radeski Miroslav , Djadjovski Igor , Mitrov Dine , Bojkovski Jovan , Adamov Nikola , Dovenski Toni 
Published: April 2019

Abstract
The objective of the present study was to determine the prevalence of postpartum dysgalactia syndrome (PDS) and associated clinical signs in farmed sows in the Republic of Macedonia (RM) in the first 12-24 h postpartum. A total of 202 sows of different parity and different genetic lines from 5 pig farms in RM were included in the study. The sows and their litters were clinically examined 12-24 hours after farrowing. Postpartum dysgalactia syndrome was detected in 23.3% of all clinically examined sows, while prevalence between farms ranged from 14.8% to 38.1%. Altered piglet’s behavior was the most frequent clinical pattern observed in 68.1% of the PDS–affected (PDSA) sows. Regarding the clinical signs in PDSA sows detected among farms, significant differences were observed in the altered piglet’s behavior (p<0.05) and hypogalactia (p<0.05). Endometritis was more often detected in older sows (90%) compared to endometritis in younger animals (44.4%). In addition, fever was also more frequently diagnosed in higher parity (≥3 parity) sows (55.0%) in contrast to other PDSA sows (22.2%). This study has demonstrated the presence of PDS in farmed sows in RM. High frequency of altered piglet’s behavior found in this study could be an useful indicator for early detection of lactation problems in sows. Frequent pathological vaginal discharge in older sows indicates that endometritis plays an important role in the clinical manifestation of PDS. Further investigations should be conducted in order to identify specific risk factors associated with clinical PDS in farmed sows in RM.
Needs Assessment for the Global-Mindedness of Vocational Certificate Students under the Office of the Vocational Education Commission
Authors: Chainut Ancharee , Suwanjan Peerawut , Pupat Phadungchai , Pimdee Paitoon 
Published: April 2019

Abstract
The objectives of the research are as follows: 1) to study the global-mindedness of vocational certificate students; 2) to compare the global-mindedness of these students by grade level, with a sample group of 361 vocational certificate students studying at the vocational certificate level in the 2016 academic year, obtained by stratified random sampling, and 3) to rank the needs for the global-mindedness of these students. The instruments used in the data collection consisted of a questionnaire on the global-mindedness expectation and authenticity of vocational certificate students, which contained 40 questions, covering four aspects, evaluated for content validity by qualified experts. The statistics used in the data analysis were mean, standard deviation, one-way analysis of variance, and the Modified Priority Needs Index (PNI). The research findings are as follows: 1) the level of global-mindedness of the vocational certificate students is high; 2) there were no differences in the global-mindedness of vocational certificate students studying at different grade levels; 3) the needs, ranked in descending order, consisted of acceptance of cultural diversity, attention to global issues, interconnectedness and peace, and world citizenship.