Miracle-dz/UniFAR-FTUs huggingface dataset:
Experimental comparative study of reactive powder concrete: mechanical properties and the effective factors

Reactive Powder Concrete (RPC) is a type of ultra-high performance concrete, this dense composite material generally characterized by high cement content, high durability, low porosity, low water/cement ratio and in most cases contains steel fibers as new types of concrete appears, further investigation for their mechanical properties are needed. This work aims to give a better understanding of RPC behavior by deriving formulas to calculate the modulus of elasticity and the splitting tensile strength in relation with compressive strength and steel fibers content. This study is based on data obtained from the experimental investigation done in this work and from others pervious works. The parametric study is based mainly on the silica fume content which is used in four different ratios (12 %, 15 %, 20 % and 25 %), the use of micro steel fibers 15 mm in length, 0.2 mm in diameter and aspect ratio of 75 added in ratios of (0 %, 1 %, 1.5 % and 2 %), and water/cement in ratios of (16 %, 18 %, 20 % and 22 %), respectively. The proposed equations show a better behavior in comparison to some available equations that were used in the estimation of modulus of elasticity and splitting tensile strength of reactive powder concrete, the coefficient of variation for the proposed equations (COV) decrease to 10.677% and 10.455% respectively.
THE UNKNOTTING NUMBER OF SOME KNOTS

We compute the unknotting number for infinite families of knots by using a famous inequality due to Murasugi that relates the unknotting number of a knot to the signature of the same knot. Also, we determine the unknotting number and show it is equal to two for some knots in the knot table with twelve crossings or less by another inequality due to Nakanishi that relates the unknotting number of a knot to the surgerical description number of the knot and by a theorem that is due to Kanenobu and Murakami.
A FIXED POINT THEOREM FOR VOLUME PRESERVING LINEAR TRANSFORMATIONS

In this note we derive consequences of the fact that if g ∈ SL(n), where n ≥ 2, and σi(g) are the coefficients of its characteristic polynomial, then g has 1 as an eigenvalue if and only if ∑ n−1 i=1 (−1) σi(g) = 0 or 2 according to the parity of n. These are: Corollary 2. Let D be a real or complex n × n matrix of tr(D) = 0. If D is singular, then one of the following equations holds (according to the parity of n). n−1 ∑ i=1 (−1)σi(ExpD) = 0 n−1 ∑ i=1 (−1)σi(ExpD) = 2. Conversely, if D has no eigenvalues in 2πiZ and the appropriate one of these equations holds, D must be singular. Corollary 3. Let A ∈ Mn(R) = M which acts on M by adA(X) = [A,X]. If A has only non-negative eigenvalues and one of the following equations holds (according to the parity of n) n 2 −1 ∑ i=1 (−1)σi(AdExp(A)) = 0 n 2 −1 ∑ i=1 (−1)σi(AdExp(A)) = 2, then [A,X] = 0 for some X ∈ M, not a linear combination of A and I . Corollary 4. Let A ∈ M and have all non-negative eigenvalues. Then the action of Exp(A) on M by conjugation has a fixed point which is not a linear combination of A and I . AMS Subject Classification: 15A04, 15A16, 15A24, 15A27, 17B40, 20G20, 22E15
Towards the detection of temporal behavioural patterns in intelligent environments

Ubiquitous computing applications propose new and creative solutions to every day needs. This paper addresses the issue of recognition of every day activities inside pervasive domestic environments in order to identify patterns of behaviour that can be later used to support care systems by detecting changes to those patterns. Our system uses a temporal neural-networkdriven embedded agent able to work with online, realtime data from unobtrusive low-level sensors and actuators. We present experimental results that show our agent is able to detect temporal patterns along with spatial similarity associations found in human behaviours and activities, in everyday living environments.
DESIGN AND IN VITRO EVALUATION OF MULTIPARTICULATE SYSTEM FOR THE CHRONOMODULATED DELIVERY OF LORNOXICAM

In view of chronobiological considerations of rheumatoid arthritis, the present study deals with the design and evaluation of multiparticulate system for the chronomodulated delivery of lornoxicam. The basic design is based on the Pulsincap technology and consisted of formaldehyde treated insoluble hard gelatin capsule body filled with tripolyphosphate cross-linked chitosan microspheres of lornoxicam and sealed with a hydrogel tablet plug. The entire device was enteric coated, so as to prevent the variable gastric emptying time. The microspheres were found to be discrete, nearly spherical with rough surface characteristics. Particle size, encapsulation efficiency and release rate of lornoxicam from the microspheres are dependent on the fabrication conditions of the microencapsulation. FT-IR, DSC and XRD studies revealed the compatibility of the drug with the excipients used. The exposure of hard gelatine capsule bodies with formaldehyde for a period of 12 hrs was found to be optimum in maintaining the intactness of the capsule bodies in the simulated GI fluids. The lag time of the designed delivery system varied from 4-8 hrs and depended on the nature and concentration of the plugging material. The ejection of the plug was delayed with increase in the polymer concentration. Among the two polymers studied as plugging materials, guar gum exhibited better control in maintaining the lag time compared to xanthan gum. From the study it can be concluded that, the lag time be efficiently tailored by varying the concentrations of the polymers in the hydrogel plug for the chronomodulated delivery of lornoxicam. Key Words: Rheumatoid arthritis; Lornoxicam; Microspheres; Chronomodulated delivery systems; Hydrogel plug; Lag time;
Quad-Band Planar Inverted-F Antenna (PIFA) for Wireless Communication Systems

In this paper, a compact quad-band planar inverted-F antenna (PIFA) for wireless communication systems is presented. The proposed PIFA consists of a radiating patch with a hook- shaped slot and a modifled ground plane with pair of square-ring and rotated I-shaped slots. The antenna is fabricated on an FR4 substrate with dielectric constant of 4.4. By cutting a hook-shaped slit at radiating patch, good dual-band property can be achieved which covers 3.5GHz worldwide interoperability for microwave access (WiMAX) and 5.2GHz wireless local area network (WLAN) frequencies. In addition, by using a modifled ground plane with a rotated I-shaped an the pair of square-ring slot, additional resonances at the higher frequencies are generated which suitable for 7.25{7.75GHz downlink of X-band satellite communication systems and 8.02{8.4GHz international telecommunication union (ITU) applications. Good return loss, antenna gain and radiation pattern characteristics are obtained in the frequency band of interest. The proposed antenna has a small dimension of 24 £ 3 £ 1:6mm 3 .
Study of Glucose-6-phosphate Dehydrogenase (G6PD) Status in Preeclampsia

Background: Glucose-6-phosphate dehydrogenase (G6PD) deficiency is one of the common enzymopathy and may be one of the risk factor for complicated pregnancy. Objectives : To measure erythrocyte G6PD level in pregnant women with preeclampsia in order to observe this enzyme status and also to measure Hb, TC of RBC, serum bilirubin, reticulocyte count to observe hemolytic status. In addition, to correlate this enzyme level with all these hematological parameters in order to find out any relationships among them. Methods: This cross sectional study was carried out in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbag, Dhaka from January to December 2008. For this, 30 pregnant women with preeclampsia, age ranged from 20 to 34 years during their third trimester (>24th weeks) were studied (group B). They were selected from the Obstetric and Gynae Out Patient Department (OPD) of BSMMU and Bangladesh Medical College Hospital (BMCH) of Dhaka City. For comparison age matched 30 apparently normal pregnant women of the same gestational age (control group - group A) were also studied. They were selected by personal contact. Erythrocyte G6PD level was measured by Spectrophotometric method using kit of Randox. Serum bilirubin, hemoglobin concentration, total count of RBC and reticulocyte count were measured by standard laboratory techniques. For statistical analysis ANOVA, independent sample t test, Chi-square test and Pearson's correlation coefficient test were performed by using SPSS for windows version-12 as applicable. Results: In this study, erythrocyte G6PD level was significantly lower in preeclampsia in comparison to that of control but their percentages of involvement was not statistically significant. In addition, hemoglobin concentration and RBC count were significantly lower and serum bilirubin and reticulicyte count were significantly higher in the study group than those of control group. On the other hand, erythrocyte G6PD level was positively correlated with hemoglobin concentration and total count of RBC while negatively correlated with serum bilirubin and reticulocyte count and all these relationships were statistically significant in the study group. Conclusion: Therefore, this study revealed that presence of G6PD deficiency associated with hemolysis in preeclampsia may act as a contributory factor for the development of this complicated pregnancy. Key words: G6PD; preeclampsia DOI: 10.3329/bsmmuj.v2i2. 4758 BSMMU J 2009; 2(2): 56-60
Komitmen Afektif Manajemen, Implementasi Sistem Pengukuran Kinerja, Akuntabilitas, dan Kinerja Organisasi Publik dalam Perspektif Teori Institusional dan

This study intends to develop a theoretical model of the PMS implementation process and accountability using the institutional theory and structuration theory perspectives. Institutionalization of PMS and accountability in an organization can not be separated from the encouragement of external parties. However, the process of institutionalization of the new system could be success or failure depends on the routines of peoples (agents) in those organizations . This research used mixed methods design with sequential explanatory. Data collection used surveys and interviews. The sample in this study was 99 management sectors in the counties and cities in the province. The data analysis result showed that institutional pressures, particularly coercive and mimetic still had strong effect on implementing PMS and accountability in local government. However, the external pressure was less able to influence individual belief and volue in organization through routines that must be done. Based on the 2 Inung Pratiwi dan Rusdi Akbar perspective of institutional theory and structuration theory could be said that the process of PMS institutionalization and accountability in Indonesia local government not goes well yet.
J. KSIAM Vol.15, No.2, 137–142, 2011 PREDATOR-PREY IN PATCHY SPACE WITH DIFFUSION

In this paper we formulate a predator-prey system in two patches in which the per capita migration rate of each species is influenced only by its own density, i.e. there is no response to the density of the other one. Numerical studies show that at a critical value of the bifurcation parameter the system undergoes a Turing bifurcation, i. e. the stable constant steady state loses its stability and spatially non-constant stationary solutions, a pattern emerge
Asteroid Meteoroid Streams

We briefly review the methods for classifying meteoroids into streams and their association with parent bodies. Most streams have comets as parent bodies, while relatively little work has been done on streams of asteroidal origin, which also seem harder to identify. We discuss how the use of the geocentric variables introduced for stream identification by Valsecchi et al. (1999) can help in the identification of asteroidal meteoroid streams.
Quantifiers, domains, and (meta-) ontology

In metaphysics, quantifiers are assumed to be either binary or unary. Binary quantifiers take the concept(s) ALL OF and/or SOME OF as primitive(s); unary quantifiers take the concept(s) EVERYTHING and/or SOMETHING as primitive(s). Binary quantifiers (explicitly) range over domains. However, EVERYTHING and SOMETHING are reducible to the binary quantifiers ALL OF and SOME OF: EVERYTHING is ALL OF some implied domain, and there is no natural, default, or inherent domain U such that EVERYTHING is ALL OF U. Therefore, any quantifier ranges over a domain, and is thus binary, and there are no unary quantifiers. This implies that if two theories assign different truth values to “Fs exist”, while they agree about the relevant properties of Fs, then the two theories quantify over different domains, and a choice between these two theories is, therefore, a choice between domains. However, none of the common arguments for or against particular domains is up to the task, and therefore, there are at least some cases in which there is no single right domain. The choice for a particular domain is a pragmatic choice. In addition to substantiating the above arguments, this paper discusses its implications for the metaphysical debate between Carnap and Quine and the contemporary controversies in meta-ontology.
Assessment of the genetic diversity of Kenyan coconut germplasm using simple sequence repeat (SSR) markers

Genetic diversity and relationship among 48 coconut individuals ( Cocos nucifera L.) collections from the Coastal lowland of Kenya were analyzed using 15 simple sequence repeat (SSR) primer pairs. Diversity parameters were calculated using Popgene Software version 1.31. The gene diversity values ranged from 0.0408 (CAC68) to 0.4861 (CAC23) with a mean value of 0.2839. The polymorphic information content (PIC) values ranged from 0.0400 to 0.3680 with a mean value of 0.2348. Marker CAC23 had the highest PIC and revealed highest gene diversity values in this study. Analysis of the molecular variation indicated that within individual variation was 98% while among materials, variation was low at 2% suggesting that molecular variation was not defined by region of production. Cluster analysis was constructed using DARwin program version 6.0. Forty eight (48) coconut individuals were clustered into three groups. Keywords: Coconut palm ( Cocos nucifera L., Arecaceae), germplasm, simple sequence repeat (SSR) markers, cluster analysis, diversity
Phytophthora Leaf Blight of Taro (Colocasia esculenta) - A Review

Taro (Colocasia esculenta (L.) Schott. ) is an important tropical tuber crop for millions of people in developing countries. Leaf blight caused by Phytophthora colocasiae Rac. is the most destructive disease of taro causing a 25-50% loss in yield. Besides, the pathogen also causes the serious post-harvest decay of corms. Both A1 and A2 mating types have been reported and it is believed that the fungus originated from Hainan Island in Asia. The existence of races of P. colocasiae is not known. The pathogen is reported to survive inside the tubers during the off-season. Collateral hosts also play an important role in the perennation of the pathogen. Secondary spread is through sporangia and zoospores, which are shed in water but not in wind and are carried by splash between plants and plantings. It has been found that Colocasia blight epidemic occurs when night and day temperatures range between 20-22 and 25-28°C, respectively with a relative humidity of 65% during the day and 100% at night and accompanied by overcast, rainy weather. Resistant cultivars have been identified in India, which can be used in breeding resistance. Copper and metalaxyl fungicides have proved to be very effective in controlling leaf blight. More in-depth studies are required to find out the existence of races, if any, of P. colocasiae, survival, biology and ecology of pathogen, a disease-forecasting system, breeding for disease resistance and disease management practices.
(S,s) insights into the role of inventories in business cycles and high frequency fluctuations

We develop an equilibrium model to explain salient business cycle patterns involving aggregate production, sales and inventory investment alongside a distinct set of patterns at high frequencies. Our firms face idiosyncratic productivity shocks and fixed costs of ordering inputs, leading them to order infrequently and accumulate inventories. Thus, the modelâ€™s aggregate state vector includes a time-varying distribution of firms over productivities and inventories. Disciplined by data on aggregate inventories and firm-level sales and output, our model reproduces key patterns in the data at business cycle frequencies: Inventory investment is procyclical and positively correlated with final sales, GDP varies more than sales, and the inventory-to-sales ratio is countercyclical. These successes are robust to a wide range of micro-level parameters governing firmsâ€™ order costs and relative productivities, while those parameters are key to the modelâ€™s high-frequency performance. When order costs are more predictable and shifts in relative productivities are transitory, the model also performs well in key high frequency respects: The relative volatility of inventory investment rises sharply, and sales and inventory investment are negatively correlated, while both series maintain positive correlations with GDP. Despite these distinctions, our model predicts that aggregate fluctuations are surprisingly unaffected by inventories even at high frequencies.
Impulsive Control of Memristive Chaotic Systems with Impulsive Time Window

The problem of impulsive control for memristor-based chaotic circuit systems with impulsive time windows is investigated. Based on comparison principle, several novel criteria which guarantee the asymptotic stabilization of the memristor-based chaotic circuit systems are obtained. In comparison with previous results, the present results are easily verified. Numerical simulations are given to further illustrate the effectiveness of the theoretical results.
Using Interviewing to Explore Clinical Learning at Team Placements: A Pilot Study

This paper reports the development of a pilot study which aims to identify a medical student’s experience and perceptions towards team placement learning and how closely those experience and perceptions link to the author’s main project--a longitudinal, multiple-method case study, which is designed to investigate how medical students learn in a multiprofessional clinical context, and how multi- and inter-professional contact influences the transition from ‘thinking as a student’, to ‘thinking like a doctor’, to ‘thinking as a doctor’, as an issue of identity construction. By using a reflexive account, the author delineates the strengths and limitations; practicalities and difficulties of in-depth interviewing, one of the qualitative data collection methods to be use in her further study.
A Posthoc Review of Two Potential Communities of Practice.

There is a growing interest among organizations in identifying and nurturing Communities of Practice. Delineating what is and what is not a Community of Practice (CoP) is not a clear-cut task. One specific area of difficulty is distinguishing between a team and a CoP. Because there are strong similarities between the two, it is often helpful to outline the areas where teams and CoPs differ. Another area of difficulty with regard to a CoP is determining, if one does indeed exist, how best to nurture its existence in an effort to provide fertile soil for its development. This paper looks at these three areas: (1) defining a CoP; (2) distinguishing between a CoP and a team; and (3) identifying ways to nurture a CoP. The framework for addressing these questions is from the perspective of a posthoc review of two case studies: the ISUnion Web-design team and the actual virtual community developed by the Web-design team. The ISUnion is an interactive Web site designed and created by graduate students of the Instructional Systems (IS) Program at an academic institution in the Southeastern United States. *The purpose of the Web-design team is to develop an electronic, Web-based infrastructure to support the development of a virtual community of dialog. (Contains 7 references.) (AEF) Reproductions supplied by EDRS are the best that can be made from the original document. A Posthoc Review of Two Potential Communities of Practice By: S. Marie Duncan, Doretta E. Gordon & Haihong Hu PERMISSION TO REPRODUCE AND DISSEMINATE THIS MATERIAL HAS EN GRANTED BY
Nigella sativa oil has significant repairing ability of damaged pancreatic tissue occurs in induced type 1 diabetes mellitus

Type 1 diabetes mellitus (T1DM) is a chronic autoimmune disease that impairs production of insulin. The disruption of insulin synthesis is caused by an autoimmune destruction of pancreatic islet cells. Nigella sativa oil (NSO) was known as hypoglycemic agent in both types of diabetes but little known about its ability of repairing the pancreatic damage occurred in T1DM. By intraperitoneal injection of a single dose of streptozotocin (STZ) (65 mg/kg), T1DM was induced in overnight fasted 24 rats. They were equally divided into four groups as following; (1) control group; (2) diabetic non treated group, (3) and (4) groups were treated with different doses of NSO (0.2 and 0.4 ml/kg) respectively, for a period of 30 consecutive days. Blood glucose was tested every morning through the experimental period. After completion the experimental protocol, blood samples were collected and serum insulin was assayed using ELISA. The pancreatic tail was dissected and kept in 10% formalin. The samples were processed using a tissue processor for histological study after H and E staining. The control group showed normal cells in pancreatic islet of Langerhans. The diabetic group with no treatment showed shrunken islets of Langerhans displaying degenerative and necrotic changes. Meanwhile, the treatment with low dose NSO protected the majority of cells in the islet of Langerhans, however the high dose NSO treatment showed a similar morphology as in normal control group (GA), so that resulted in significant elevation of serum insulin level (p<0.005). The data suggests that NSO treatment has a therapeutic effect against STZ induced T1DM rats.