Miracle-dz/UniFAR-FTUs huggingface dataset:
Investigation of integrated science course process and the opportunities to implement CSCL learning environments

Integrated science learning should master the entire science study holistically and achieve it needs to be implemented collaboratively. This study aims to describe an integrated science course process and the possibility of implementing CSCL learning environments. Qualitative descriptive was used to analyze data. Data were collected using closed questionnaires with interviews added. The results revealed that there were no collaborative discussions during the course by students that lead affect misconceptions and difficulties to learn of integrated science, due to differences in scientific background. The opportunity to implementing CSCL learning environment is relatively wide due to the availability of technology facilities and skills, but it needs training in operating blogs, wikis, scripts, and interactive multimedia as a CSCL strategy.
NEUTROPHIL TO LYMPHOCYTE RATIO IS A USEFUL PREDICTOR OF ATRIAL FIBRILLATION IN PATIENTS WITH DIABETES MELLITUS

Background & aims: Diabetes mellitus is an important risk factor for the development and progression of atrial fibrillation. There are several possible pathways to the mechanisms of atrial fibrillation associated with diabetes mellitus. Long-term inflammation is one of the mechanisms. To our knowledge, there is not a study that consistent evidence about the link between atrial fibrillation and neutrophil to lymphocyte ratio in diabetes mellitus. In the study, we aimed to investigate the possible association of chronic atrial fibrillation with neutrophil to lymphocyte ratio in patients who have type 2 diabetes mellitus. Methods: A total of 812 diabetes mellitus patients were retrospectively screened between March 2012 and March 2013. Patients with diabetes mellitus and a history of electrocardiographically documented persistent atrial fibrillation were assigned to the atrial fibrillation group (Group 1) (n=72) and, if no history of atrial fibrillation was evident, patients were placed in the normal sinus rhythm group (Group 2) (n=72). Results: Neutrophil to lymphocyte ratio was different among patients with atrial fibrillation and without atrial fibrillation (2.87±1.3 vs. 2.2±1.56 p=0.019). Cut-off point of Neutrophil to lymphocyte ratio was at 2.38, and sensitivity, specificity was 75.7% and 67% respectively Conclusions: In conclusion, we suggest that neutrophil/lymphocyte ratio increase in diabetic patients with atrial fibrillation when compared to diabetic patients without atrial fibrillation. We think that neutrophil to lymphocyte ratio can be used as a marker of development of atrial fibrillation in diabetic patients.
Comorbidity and Delayed to Seek Medical Treatment as Risk Factors of Severe Pneumonia in Children at Sanglah General Hospital

Background Childhood pneumonia remains a leading killer of children in developing countries, where it accounts for up to 21% of deaths in children under the age of five years. Severe clinical pneumonia is caused by a combination of exposure to risk factors related to the host, environment and infection. Approximately 13% of pneumonia cases are severe enough to require hospitalization. Studies on the risks factors for severe pneumonia are few in the literature and done more than a decade ago. Objective This study aims to identify risk factors of severe pneumonia in children at Sanglah General Hospital. Methods The study design is retrospective analytic case control, involving 45 childrens with severe pneumonia (case group) and 45 childrens with pneumonia (control group) who came to Sanglah General Hospital. Data was obtained from the initial medical records of pediatric patients with pneumonia and severe pneumonia in Respirology division child health department Sanglah General Hospital during period January 2015 to December 2016. Results Total of 90 subjects were included in this study and divided in to 45 subjects in case group and 45 subjects in control group. Data shows that males more than females in both groups (64.4% vs 60.0%). Most of them are in the age interval 3-60 months (75.6% vs 68.9%). Multivariate analysis showed that only having comorbidity (OR 5.4; 95% CI 1.9 to 15.0) and delay for 3 or more days to seeking treatment in health facility (OR 3.9; 95% CI 1.4 to 11.0) were significant risk factors of severe pneumonia in children. Conclusion Comorbidity and delay for 3 or more days to seeking treatment in health facility are the main risk factors for severe pneumonia.
Application of Analytic Hierarchy Process (AHP) in shipyard project investment Risk Recognition

Risk Recognition is an important part in shipyard project risk management. The purpose of this paper is to explain how to identify risks by means of AHP. Firstly, we analyzed briefly the superiority of AHP in shipyard project risk Recognition; secondly, expounded the basic steps of risk Recognition based on AHP in shipyard project investment; then we proposed the principle and tips of applying AHP in identifying project risks by demonstrating a case of shipbuilding base. To prove the validity of AHP, we have identified the risk factors of the Shipyard project that mentioned in the case above, and have also calculated the influence weights taxis of dominating risk factors to the general risk. Key words: Shipyard Project Investment; AHP; Risk Recognition; Risk Factors
Commentary : Should an organization devote communication dollars to making the CEO famous ?

Hutton, Goodman, Alexander, and Genest (2001) argue that “the most reputable or admired companies” tend to have well-known CEOs (p. 247). Hutton et al. (2001) cite “studies by Fortune, the Financial Times and many other publications and research organizations”, plus give Microsoft, AOL, Southwest Airlines, General Electric, Berkshire Hathaway, and Intel as cases in support of their argument. If making an organization’s CEO a celebrity drives reputation, an interesting question is whether an organization should devote substantial communication dollars to making the CEO famous. Recent high-profile CEO disgraces would suggest that CEO fame is a double-edged sword. This article explores industry-based and anecdotal evidence of the benefits and risks associated with a high-profile CEO, and outlines an area for further research. To date, although there is some industry research on this topic, it appears to have been paid scant academic attention. This article is a preliminary exploration of ideas, and the author welcomes feedback and discussion on the best ways to test whether the frequent perception of a correlation between CEO profile, corporate reputation, and corporate performance is accurate, and/or whether and how the relationships may be causal.
Determinants of Individual Investment Decisions in Investment‐Based Crowdfunding

We investigate determinants of investment decisions in investment-based (equity and real estate) crowdfunding campaigns, using a novel investment-, investor- and campaign-level database. We find that women invest less in the riskiest investments but more in safer ones. These findings are better explained by differences in risk aversion than differences in overconfidence between men and women. Investors located in an area considered more "sociable" (socially friendly) also invest more, especially if the investor is a woman. Overall, the findings contribute to our understanding of how investment-based crowdfunding can be a viable source of entrepreneurial finance and how entrepreneurs' campaign decisions affect investor participation in this new form of entrepreneurial finance.
Functionality of Career Advancement and Organizational Effectiveness : Nigerian Deposit Money Banks Perspective

The study provides a holistic view of how employees‟ career advancement can affect organizational effectiveness among selected deposit money banks in Nigeria. The specific objective is to determine the relationship between career advancement and organizational effectiveness in the Nigerian deposit money banks. Primary data was collected from a total of seven (7) banks from existing twenty one (21) licensed banks by Central bank of Nigeria (CBN) through structured questionnaire to elicit information on career development. Data collected were analyzed using both descriptive statistics to determine the relationship between respondents socio-economic characteristics and organizational effectiveness while inferential statistics of Pearson Product Moment Correlation coefficients (PPMC) was employed to analyze the relationship between the variables of career advancement and organizational effectiveness respectively. Findings revealed that employee career advancement in the organization exert a great influence on the operations of deposit money banks in Nigeria, and as such banks management should invest in employees‟ development to stem employee turnover and improve productivity.
Evolution of Seed Size and Biotic Seed Dispersal in Angiosperms: Paleoecological and Neoecological Evidence

Origins of biotic seed dispersal by vertebrates and evolution of different seed sizes are conspicuous features in angiosperm evolution. In the Cretaceous, angiosperms remained small seeded, and biotic seed dispersal was rare. In the Early Tertiary, average seed size increased drastically, and biotic seed dispersal by vertebrates became common. Later in the Tertiary, along with climate cooling and the opening of vegetation, average seed size dropped. Fossil data suggest a positive correlation between seed size and biotic seed dispersal. This article examines three hypotheses: (1) the coevolution hypothesis, which suggests that evolution of large seeds and biotic dispersal were driven by interactions between plants and frugivorous vertebrates; (2) the recruitment hypothesis, which suggests that vegetation change altered recruitment conditions that favored large seeds and in turn promoted biotic dispersal; and (3) the life‐form hypothesis, which suggests that large seeds and biotic dispersal evolved as coadapted traits along with evolution of large plant life‐forms. The hypotheses are complementary rather than mutually exclusive. Evidence suggest that changes in vegetation structure (open vs. closed) are probably a primary driving mechanism of seed size and dispersal evolution, but life‐forms, seed sizes, and biotic dispersal systems have evolved as coadapted sets of traits in response to these environmental changes.
Breeding Biology of King Eiders Nesting on Karrak Lake, Northwest Territories

We studied various aspects of the breeding biology of king eiders (Somateria spectabilis) nesting at Karrak Lake, south of Queen Maud Gulf in the central Canadian Arctic. We found 41 nests distributed among 10 islands in Karrak Lake; to our knowledge, this represents the largest number of king eider nests studied at one site. We suspect that island nesting by king eiders is more common than has been previously reported. King eiders favoured mid-sized islands (0.002 - 0.081 km 2 ) over very small (less than 0.002 km 2 ) or very large (greater than 0.081 km 2 ) islands. Mean clutch size was 5.4 ± 1.7 (SD) eggs. Apparent nest success was 69.4%, with a composite Mayfield estimate of nest success over egg laying and incubation of 48.7% (95% CI: 47.4 - 50.0%). Nest success was uncorrelated with date of nest initiation or island size, but eiders nesting on islands farther from the mainland had greater success than those nesting on islands closer to the mainland. Additionally, nest success was greater on islands with more nesting eiders and on islands with nesting arctic terns (Sterna paradisaea).
The effect of enzymatic treatment on bioactive compounds and antioxidant capacity of pasteurized apple juice.

In this study the effect of enzymatic treatment of pasteurisation apple juice derived from two apple cultivars, on bioactive compounds and antioxidant capacity was evaluated. The enzymatic treatment with pectinase was used to obtain the clear juice. The total polyphenols content was determined by Folin-Ciocaltei method, the total flavonoids was determined by colorimetric method and vitamin C was determined by titrimetric method. The antioxidant activity was determined by DPPH method. The enzymatic treatment decrease significantly the content in polyphenols and flavonoids. The vitamin C drastic decreases during the pasteurisation process, because is heat labile. The antioxidant capacity was not affect by the enzymatic treatment in the case of Golden juices but it was low in the case of Florina juices by 17.72%.
DESIGN OF NITROGEN-TETROXIDE / MONOMETHYL- HYDRAZINE THRUSTER FOR UPPER STAGE APPLICATION

Nitrogen tetroxide (N2O4) is a high density storable oxidizer. For many space applications, monomethyl hydrazine (MMH) and N2O4 are frequently adopted hypergolic propellantcombinations. Although N2O4 and MMH are toxic, because of their high specific impulse, extreme storage stability, and hypergolic nature, the combination is extensively used in orbital maneuvers, reaction controls, and launch vehicle propulsion. The present study details the design procedure for a 450-N and 3600-s reaction control rocket engine using N2O4 and MMH. The restartable engine should be capable of producing short thrust pulses of varying thrust levels. By using NASA CEC71 complex chemical equilibrium program the optimum oxidizer to fuel ratio is calculated to be 1.69. The procedures to configure the combustion chamber and propellant tanks are detailed. The propellants are pressurized by helium under blow down mode. A bell shaped nozzle contour with area ratio of 375 is adopted. NOMENCLATURE ACAT = chamber nozzle-throat contraction ratio F C = thrust coefficient d = diameter (m) F = thrust (N) FS = factor of safety
Training reduces the drawing detriments associated with categorical perception

Previous research suggests that categorical perception may interfere with a novice artist’s ability to accurately draw simple shapes. Specifically, when asked to draw two shapes of slightly different sizes, participants tend to exaggerate the categorical difference between the two and draw the small shape too small. Similarly, participants tend to draw oblique angles more oblique than they should be when they are close to perpendicular or overlapping. The current set of experiments investigated whether these categorical errors could predict participants’ drawing ability on a more complex drawing task. A simple linear regression revealed that categorical errors in angle could significantly predict participants’ scores on a face drawing task. In addition several training methods commonly used in art classes were evaluated for their effectiveness to reduce these types of errors for novice participants compared to a control training method and results indicated that explicit knowledge of the categorical and coordinate systems reduced overall errors, while the grid technique and sighting reduced categorical errors.
Study of the effect of Allium porrum on hypertension induced in rats

El presente estudio fue disenado para investigar el efecto del extracto alcoholico de Allium porrum (250 y 500mg/kg) en la hipertension inducida experimentalmente en ratas machos por la administracion oral del L-NG-nitroarginina metil ester(L-NAME) (50mg/kg / dia) durante cuatro semanas sucesivas. El extracto alcoholico de Allium porrum (250 y 500 mg/kg) se administro por via oral diariamente 8 semanas previas a la induccion de la hipertension y 4 semanas simultaneamente con L-NAME. La presion sanguinea sistolica (PSS) se midio cada semana por el metodo de anillo de la cola; se tomaron muestras de sangres al final de los experimentos para la determinacion de colesterol serico, oxido nitrico, malon dialdehido y capacidad antioxidante total. La administracion oral del extracto de Allium porrum (250 y 500 mg/kg) dio como resultado la reduccion significativa de la PSS elevada inducida por L-NAME (50 mg/kg) comparado con el grupo control hipertenso. El extracto alcoholico de Allium porrum tambien presento actividad antioxidante significativa y efecto hipocolesterolemico, ademas de incrementar significativamente el oxido nitrico serico. Se concluye que el extracto alcoholico de Allium porrum tiene efecto promisorio en la hipertension experimental en ratas, que se puede atribuir a su capacidad antioxidante
Optimal Bloom Filters and Adaptive Merging for LSM-Trees

In this article, we show that key-value stores backed by a log-structured merge-tree (LSM-tree) exhibit an intrinsic tradeoff between lookup cost, update cost, and main memory footprint, yet all existing designs expose a suboptimal and difficult to tune tradeoff among these metrics. We pinpoint the problem to the fact that modern key-value stores suboptimally co-tune the merge policy, the buffer size, and the Bloom filters’ false-positive rates across the LSM-tree’s different levels. We present Monkey, an LSM-tree based key-value store that strikes the optimal balance between the costs of updates and lookups with any given main memory budget. The core insight is that worst-case lookup cost is proportional to the sum of the false-positive rates of the Bloom filters across all levels of the LSM-tree. Contrary to state-of-the-art key-value stores that assign a fixed number of bits-per-element to all Bloom filters, Monkey allocates memory to filters across different levels so as to minimize the sum of their false-positive rates. We show analytically that Monkey reduces the asymptotic complexity of the worst-case lookup I/O cost, and we verify empirically using an implementation on top of RocksDB that Monkey reduces lookup latency by an increasing margin as the data volume grows (50--80% for the data sizes we experimented with). Furthermore, we map the design space onto a closed-form model that enables adapting the merging frequency and memory allocation to strike the best tradeoff among lookup cost, update cost and main memory, depending on the workload (proportion of lookups and updates), the dataset (number and size of entries), and the underlying hardware (main memory available, disk vs. flash). We show how to use this model to answer what-if design questions about how changes in environmental parameters impact performance and how to adapt the design of the key-value store for optimal performance.
Role of Depth of Invasion in Evaluation and Management of Early-stage Oral Cavity Squamous Cell Carcinoma

Aim: To evaluate the existing body of literature and impact of depth of invasion (DOI) in early-stage oral cavity squamous cell carcinoma (OCSCC) and its role in predicting occult cervical lymph node metastases. Background: The prognosis for early-stage T1 to T2 disease OCSCC is relatively poor compared with other mucosal subsites within the head and neck. Primary tumor DOI can help prognosticate high-risk tumors for additional treatment. Review results: There are unequivocal management implications in the literature demonstrating a role for elective neck dissection in early-stage OCSCC based on DOI. Following appropriate patient selection, there may be a role for sentinel lymph node biopsy in regional lymph node staging in earlystage OCSCC. Conclusion: There are a multitude of studies demonstrating novel strategies to appropriately treat early-stage OCSCC, which are increasingly becoming standard of care. These strategies are altering the overall and disease-free survival of early-stage OCSCC. Despite advances, locoregional recurrence remains a challenge in this disease. Clinical significance: Herein, the authors highlight a number of advances in the management of early-stage OCSCC as described in the literature, which are having an impact on disease-free and overall survival.
Fake images: The effects of source, intermediary, and digital media literacy on contextual assessment of image credibility online

Fake or manipulated images propagated through the Web and social media have the capacity to deceive, emotionally distress, and influence public opinions and actions. Yet few studies have examined how individuals evaluate the authenticity of images that accompany online stories. This article details a 6-batch large-scale online experiment using Amazon Mechanical Turk that probes how people evaluate image credibility across online platforms. In each batch, participants were randomly assigned to 1 of 28 news-source mockups featuring a forged image, and they evaluated the credibility of the images based on several features. We found that participants’ Internet skills, photo-editing experience, and social media use were significant predictors of image credibility evaluation, while most social and heuristic cues of online credibility (e.g. source trustworthiness, bandwagon, intermediary trustworthiness) had no significant impact. Viewers’ attitude toward a depicted issue also positively influenced their credibility evaluation.
Effects of Arctic Alaska Oil Development on Brant and Snow Geese

Black brant ( Branta bernicla nigricans ) and lesser snow geese ( Chen c. caerulescens ) breeding in and near arctic Alaska oil fields could be affected by oil development actions such as releases of contaminants, alteration of tundra surfaces, creation of impoundments, and human activities. These actions could affect geese directly (e.g., through oil spills) or indirectly (e.g., by altering food supplies or predator populations). Studies to date indicate no changes in the distribution, abundance, or reproduction of these geese that clearly can be attributed to development; rather, their numbers and recruitment have responded in the oil fields, as elsewhere, mainly to weather and predation. When snowmelt in spring is later than usual, the birds postpone or forego nesting, with consequent diminishment in recruitment. Predation by arctic foxes ( Alopex lagopus ), glaucous gulls ( Larus hyperboreus ), and grizzly bears ( Ursus arctos ) sometimes causes substantial losses of eggs and young, and predation by ravens ( Corvus corax ) has also been observed. Development-related changes in weather (microclimate) and loss of feeding habitat have involved small percentages of the total areas traditionally used, and populations of the birds probably have not been affected by these changes. Some studies and observations suggest that development has elevated local populations of some predators, but whether the level of predation on geese has in consequence risen above that which would have occurred in the absence of development is unknown; further investigation of this mechanism of potential impact is recommended. Key words: Brant, Branta bernicla , snow goose, Chen caerulescens , oil development, Alaska, impact assessment, predation, nutrition
Chemical Characterization of Sandy Soils Irrigated with Sewage Effluent for Extended Periods from a Kinetic Perspective

Thirty four soil samples from the surface (0-30 cm) and sub-surface (30-60 cm) layers were collected from both El-Gabal El-Asfer (16 samples) and Abu-Rawash (16 sample) sewage farms in addition to two un-sewaged sandy soils. Collected soil samples represented soils under different landscapes irrigated with sewage effluent for varied extended periods ranging between 0 and 82 years. Results exhibited definite remarkable chronological changes in the soil pH, EC, organic matter and surface area particularly during the first ten years of irrigation with sewage effluent. Both total and fractions of potential toxic elements (PTEs) increased in soil as time goes on and the calculated Zn equivalent models varied between 137.5 and 563.5 at El-Gabal El-Asfer and between 52.55 and 633.9 at Abu-Rawash farm. From a kinetic perspective, about 3 of 5 kinetic models fitted to desorption kinetic data and pointed to different mechanisms in PTE's sorption and subsequently it's desorption and bioavailability to land use. The kinetic study confirmed that PTEs were sorbed at two faces, the soil particles and the organic matter fractions that were accumulated along ten's of years at varied forces of reaction. Inner-sphere complexes might be either monodentate or bidentate as far as the amount of the PTEs cation sorbed on a surface coverage increased surface precipitate.