Miracle-dz/UniFAR-FTUs huggingface dataset:
A Multi-Objective Optimization Approach for Solving AUST Classtimetable Problem Considering Hard and Soft Constraints

Preparing a class timetable or routine is a difficult task because it requires an iterative trial and error method to handle all the constraints. Moreover, it has to be beneficial both for the students and teachers. Therefore, the problem becomes a multi-objective optimization problem with a good number of constraints. There are two types of constraints: hard and soft constraint. As the problem is an NP-hard problem, population based multi-objective optimization algorithms (multi-objective evolutionary algorithm) is a good choice for solving the problem. There are well established hard constraints handling techniques for multi-objective evolutionary algorithms, however, the technique is not enough to solve the problem efficiently. In the paper, a smart initialization technique is proposed to generate fewer constraints violated solutions in the initial phase of the algorithm so that it can find feasible solutions quickly. An experimental analysis supports the assumption. Moreover, there are no well-known techniques available for handling soft constraints. A new soft constraints handing technique is proposed. Experimental results show a significant improvement can be achieved. Finally, proposed combined approach integrates smart initialization and soft constraints handling techniques. Better results are reported when comparing with a standard algorithm.
Visualizing the development of prose styles in Horse Manuals from Early Modern English to Present-Day English

International audience This paper offers a data-driven analysis of the development of English prose styles in a single genre (instructive writing) dealing with a single topic (the correct way of feeding a horse) in 13 texts with publication dates ranging between 1565 to 2009. The texts are subjected to three investigations that offer visualizations of the findings: (i) a correspondence analysis of POS-tag trigrams; (ii) an association plot analysis; (iii) hierarchical clustering (dendrograms). As the period selected – Early Modern English to Present-Day English – does not involve any major changes in English syntax, we expect to find developments that are predominantly stylistic.
The British are coming…! A bibliometric analysis of L2 vocabulary research in 1988

This paper uses a co-citation analysis to examine the research on L2 vocabulary acquisition that was published in 1988. Two analyses are presented. The first is a detailed account of the 1988 research on its own terms. The second analysis places this work in a larger context by looking at the research published in a five-year window covering 1984–88. The analyses identify important themes in the research and significant sources who are influencing the way the research is developing at this time. A particularly important new research theme centred around corpus linguistics appears in the 1988 data, and there are some surprising changes to the list of influential sources.
Family Matters: The Making and Remaking of Family during Conflict Periods in Central Asia

The family as a social institution has survived most diverse political periods and appears resilient or at least able to reconstitute itself even in the aftermath of destructive events such as wars. Age at first marriage is one possibility to systematize the strategies that families follow in times of internal conflicts (e.g., civil wars), external interventions or peaceful times. The authors found that age at first marriage correlates with socio-political events whereas perceptions of insecurity lead to a decline in marital age. This paper is based on three case studies that the authors have conducted through ethnographic methods among Tajiks in the cities Kulob, Khujand, and Mazar-e Sharif in Tajikistan and Afghanistan. Combining Grounded Theory with the genealogical methods from social anthropology in order to generate demographic data, the authors introduce the method of grounded demography as a way to generate demographic data through ethnographic methods. Grounded demography offers a way to produce statistical data grounded in ethnographic research. SOPHIE ROCHE · SWETLANA TORNO · SAID REZA KAZEMI
Synthesis, Liquid‐Crystalline Properties, and Photo‐optical Studies of Photoresponsive Oligomeric Mesogens as Dopants in a Chiral Glassy Liquid Crystal

We have prepared photoresponsive oligomers that have molecular weights of ca. 4500, 8000, and 16 000 g mol–1 via the free‐radical polymerization of 4‐[4‐alkylphenylazo]phenoxyalkyl acrylates. All of the oligomers possess bilayer smectic A (SmA) and smectic B (SmB) phases. Increasing the concentration of these oligomeric dopants in a glass‐forming cholesteric liquid crystal causes a dramatic red‐shift in the reflection wavelength. The pitch shifts are very dependent on the alkyl chain lengths and molecular weights of the dopants. The oligomer that contains octyl chains and an octyl spacer, and that has a molecular weight of 4500 g mol–1 exhibits the largest shift in the reflection wavelength. UV exposure has been used to control the cholesteric reflection pitch of the oligomer‐cholesteric glassy liquid‐crystal mixture over the entire visible region of the electromagnetic spectrum and vitrifies the samples by rapid cooling from their cholesteric temperatures to 0 °C. Extremely stable, even at 70 °C, erasable, full‐color images have been created using this host–guest mixture.
Low temperature aqueous ferric sulfate solutions on the surface of Mars

We have studied the low‐temperature properties of ferric sulfate Fe2(SO4)3 solutions as a model for potential liquid brines on the surface of Mars. Geochemical modeling demonstrates that concentrated ferric sulfate brines form through sulphur‐rich acidic evaporation processes in cold oxidizing environments. Experiments and thermodynamic calculations show that the Fe2(SO4)3 eutectic temperature is 205 ± 1 K for 48 ± 2 wt% concentration. As a result of low water activity, these solutions exhibit evaporation rates ranging from 0.42 mm h−1 (29.1 wt%) to 0.03 mm h−1 (58.2 wt%), thus down to 20 times lower than pure water. The combination of extremely low eutectic temperature and evaporation rates allow subsurface liquids to be stable at high latitudes, where the majority of gullies and viscous flow features are located. Therefore, we conclude that episodic releases of highly concentrated ferric sulfate brines are a potential agent for the formation of recent and present‐day gullies on Mars.
Document Clustering For Computer Inspection

 Abstract — Clustering is an approach that organizes a large quantity of unstructured text documents into a small number of meaningful and coherent clusters. We compare and analyze the effectiveness of these measures in partitional clustering for text document datasets. Clustering means extraction and fast information retrieval or filtering. Related to document clustering, clustering methods can be used to automatically group the retrieved documents into a list of useful categories. Document clustering contains descriptors and descriptor retrival. Descriptors are collection of words that describe the contents of the cluster. Document cluster is generally considered to be a centralized process.
Improving the durability of cultivator blades using one-sided gas-flame surfacing

Azamat Fayurshin1*, Mars Farkhshatov1, Rinat Saifullin1, Linar Islamov1, Ilnar Gaskarov1, Rivaz Masyagutov1, Ilnara Bagautdinova2 1Federal State Budgetary Educational Establishment of Higher Education “Bashkir State Agrarian University”, Department of Technology of metals and repair of machines, Ufa, Russia 2Federal State Budgetary Educational Establishment of Higher Education “Bashkir State Agrarian University”, Department of Technology of Mechanics and Design of Machines, Ufa, Russia
Physicochemical characterization of the pulp oil of bacuri Attalea phalerata Mart. ex Spreng. (Arecaceae)

The aim of the study was to characterize the pulp oil of bacuri Attalea phalerata Mart. ex Spreng. (Arecaceae) according to official analytical methods. Total phenolic and carotenoids contents were evaluated by spectrophotometry, and tocopherols composition by high-performance liquid chromatography. The fatty acid profile was obtained through gas chromatography from samples transesterified with potassium hydroxide in methanol and n-hexane. According to the proximate composition, bacuri pulp contained 41.5 % carbohydrates and 39.2 % lipids. Regarding its physicochemical properties, the oil showed a free fatty acids content of 0.7 %, a peroxide value of 1.4 meq/kg, a refractive index of 1.463, an iodine number of 84.3 g I2/100 g, a saponification number of 193.5 mg KOH/g, an unsaponifiable matter of 0.5 %, and 48.7 h of oxidative stability. Total phenolic, carotenoids, and tocopherols contents recorded values of 2.4 mg GAE/g, 243.0 µg/g, and 86.8 mg/kg, respectively. The bacuri oil showed a fatty acid composition similar to olive oil and a high percentage of unsaturation, finding 67.3 % of monounsaturated acids, and 11.3 % of polyunsaturated acids. The main fatty acids were oleic (67.3 %), palmitic (13.3 %), and linoleic (10.5 %). Due to its physicochemical characteristics, bacuri oil has a great potential to be used in food preparations, such as salad oil or in margarine formulation.
Preparation and evaluation of photocatalytic activity of poly(dimethylsiloxane)–titanium dioxide composites

The poly(dimethylsiloxane)–titanium dioxide (PDMS–TiO2) composites were prepared by emulsion polymerisation of octamethylcyloteterasiloxane (D4) in the presence of TiO2 particles modified by [γ-(methacryloxy)-propyl] trimethoxysilane (γ-MPS). The structure of the prepared PDMS–TiO2 composites was characterised by fourier transform infrared (FTIR) spectra, thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The results show that PDMS is grafted onto the surface of TiO2 particles via γ-MPS. The photocatalytic activity of PDMS–TiO2 composites was evaluated by decomposition of methyl orange (MeO). The result indicates that PDMS–TiO2 composite is one kind of efficient catalyst for MeO decomposition and the decomposition rate constant of MeO for PDMS–TiO2 composite is ∼3 times of that for TiO2. UV-vis diffuse reflectance spectra measurements show that the absorbance of PDMS–TiO2 composites is higher than that of TiO2 in the visible light range.
Quality of Word Vectors and its Impact on Named Entity Recognition in Czech

Named Entity Recognition (NER) focuses on finding named entities in text and classifying them into one of the entity types. Modern state-of-the-art NER approaches avoid using hand-crafted features and rely on feature-inferring neural network systems based on word embeddings. The paper analyzes the impact of different aspects related to word embeddings on the process and results of the named entity recognition task in Czech, which has not been investigated so far. Various aspects of word vectors preparation were experimentally examined to draw useful conclusions. The suitable settings in different steps were determined, including the used corpus, number of word vectors dimensions, used text preprocessing techniques, context window size, number of training epochs, and word vectors inferring algorithms and their specific parameters. The paper demonstrates that focusing on the process of word vectors preparation can bring a significant improvement for NER in Czech even without using additional language independent and dependent resources.
Comparing self-determination theory and the L2 motivational self system and their relationships to L2 proficiency

This study empirically compares two often-utilized motivation theories in L2 studies: self-determination theory and the L2 motivational self system. It also examines the relationships among their motivational constructs, learners’ intended L2 learning effort, and L2 proficiency. While a number of studies have utilized these models in order to examine second language learners’ motivation, there has not been a thorough comparison of the two. Furthermore, while many studies have demonstrated the structural relationships between the motivational constructs of the two theories and the learner’s self-reported amount of effort, fewer studies have examined their L2 achievement. The results of this study indicated that the constituents in the two theories are correlated as predicted. Furthermore, while internalized types of motivation in self-determination theory predicted intended learning effort, which then led to L2 proficiency, the strength of the ideal L2 self was much weaker than the L2 learning experience, unlike what is argued in the theory.
Volatile Sulfur Compounds From a Redox-controlled-cattle-manure Slurry

Volatile S compounds have been implicated as contributors to the odor problem from cattle-feedlots. This study was designed to evaluate the effects of oxidation-reduction potentials (E/sub h/) on the type and amount of volatile S compounds released from cattle manure. The laboratory experiment utilized a manure slurry controlled at pH 7, 30/sup 0/C, and a preselected E/sub h/ levels. The E/sub h/ of the slurry was initially controlled at +300 mV, and subsequently decreased in increments of 100 mV/week through -200 mV. Effluent gases from the incubation flask were trapped, and the S gases analyzed by gas chromatography. Carbonyl sulfide (COS) and carbon disulfide (CS/sub 2/) production was low (less than or equal to 0.07 .mu.g/g manure/d) at all redox levels. Dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) were highest at 0 mV, while hydrogen sulfide (H/sub 2/S) and methanethiol (MeSH) were greatest at -100 mV. The total amount of S volatilized from the manure slurry as each compound was: H/sub 2/O, 155 . mu.g; MeSH, 135 . mu.g; DMS, 83.mu.g; DMDS, 27 . mu.g; COS, 8 . mu.g; and CS/sub 2/, 3 . mu.g; representing about 1.7% of the total manure S.
PARTNERSHIP CONCEPTS IN DANISH PUBLIC PROCUREMENT – DIFFERENT CONCEPTS FOR DIFFERENT CUSTOMERS

This research examines collaborative relationships from the selling firm’s perspective and will on a conceptual basis, investigate how partnerships concepts are developed. In today’s competitive environment, business relationships are increasingly complex and dynamic, and therefore partnerships should also be viewed as rapidly changing, complex and dynamic entities. Based on action research at SKI (National Procurement Ltd. – Denmark) concerning the types of partnerships that SKI engages in with its customers, this paper highlights the different natures of partnerships and that a partnership cannot be viewed as a single, homogeneous concept, as is often the case in the literature. Though the concept of partnership has received much attention in the literature, the approach of most studies has primarily been one dimensional. This paper will try to fill this gap.
ISOLATION AND CHARACTERIZATION OF PHOSPHATE-SOLUBILIZING AND HEAVY-METAL TOLERANT BACTERIA FROM AGRICULTURAL FIELDS IN MATARA DISTRICT, SRI LANKA Walpola BC* and Hettiarachchi RHAN

The capacity to solubilize inorganic phosphates by phosphate-solubilizing bacterial strains isolated from soil samples collected from different agricultural fields in Matara District was assessed. The isolated phosphate solubilizing bacterial strains were then tested for tolerance against four heavy metals such as cadmium (Cd), lead (Pb), zinc (Zn) and copper (Cu) each with three concentrations (100 mg/L, 200 mg/L, and 400 mg/L). The bacterial strains with the highest phosphate solubilization capacity and resistance to heavy metal were selected and the phosphate solubilization potential under different heavy metals was then assessed. The results showed that most of the tested isolates proved to be tolerant to the heavy metals at low concentrations. However, a subsequently significant reduction in tolerance was observed when heavy metal concentration increased. Except three isolates, all the other isolates were proved to be vulnerable to the heavy metals of Cd and Pb at the 400 mg/L concentration. Among the tested 15 isolates, PSB-14 showed the highest tolerance to 100 mg/L, 200 mg/L and 400 mg/L of Cd, Pb, Cu and Zn. The strain was identified as Enterobacter cancerogenous according to the 16 rRNA analysis. The bacterial strain showed very high degree of reductions in phosphate solubilization in the presence of heavy metals Cd and Pb. The order of the toxicity of the metals to strain was found to be Pb > Cd > Cu > Zn. According to the results, it could be concluded that heavy metals Cd and Pb was shown to display a major impact on phosphate solubilization while Cu and Zn had a mild effect.
Trace metals and their relation to bacterial infections studied by X-ray microscopy

Bacterial pathogens survive in different environments in the human host by responding with expression of virulence factors that enable them to adapt to changing conditions. Trace elements regulate the expression of many virulence genes in bacteria and are thus important for their survival in the host. Mycobacteria are intracellular pathogens that can cause diseases such as tuberculosis or secondary infections in immunocompromised patients We have used a hard x-ray microprobe to study the trace element distribution in the mycobacterial phagosome after infection of macrophages. We have studied phagosomes with virulent (M. avium) and nonvirulent (M. smegmatis) mycobacteria. In this article, we will show that the iron concentration in phagosomes with macrophages infected with nonvirulent M. smegmatis is reduced 24 hours after infection but increased in phagosomes in cells infected with virulent M. avium. In addition, we will show the effect activation of macrophages with tumor necrosis factor (TNF-α) or interferon (IFN-γ) has on the iron concentration in M. avium.
Modified Perturb and Observe MPPT Algorithm for Drift Avoidance using SEPIC Converter

1Assistant Professor, VPM’s MPCOE, Velneshwar 2Assistant Professor and HOD, Pillai HOC College of Engineering, Rasayani, Panvel 3R&D Department, Radium Engineering, Bavdhan, Pune ---------------------------------------------------------------------***---------------------------------------------------------------------Abstract MPPT (Maximum Power Point Tracking) is a commonly used technique for extracting maximum possible power from solar photovoltaic (PV) systems under all conditions. Out of various methods used for achieving MPPT, perturb and observe (P&O) is very popular and widely accepted method owing to its simple nature, ease in implementation and high efficiency. However, P&O algorithm has drawback that it suffers from drift phenomenon. Which results in drifting away of algorithm from maximum power point during sudden change in atmospheric conditions. Therefore it becomes essential to do modifications in traditional P&O algorithm for drift avoidance. The new algorithm which thus implemented is termed as ‘Modified P&O Algorithm’ which takes change in current, voltage and power into consideration. This new algorithm is verified using MATLAB/Simulink. SEPIC converter is used for controlling DC to DC power flow by controlling output (load) voltage. Results are tested on simulation as well as hardware setup. Results prove that modified P&O algorithm is drift free algorithm and it can track maximum power point under any changing atmospheric condition.
Smart Speaker vs. Social Robot in a Case of Hotel Room

Under the circumstances that social robots are increasingly being developed and studied in service encounters at public spaces, are they introduced into residential environments (i.e., private space)? This study hypothesizes that a personal assistant device in residential environments should wear human-like appearance to engage in service as conversation partner. We implemented the interaction design that provides regular services as the current personal assistant and additional service as conversation partner, and then conducted a field experiment where the participants stayed in the hotel rooms with a smart speaker or a social robot. The results support the hypothesis in that of conversation amount and emotional experience by conversation. The results also suggest the possibility of commercial service, namely conversational advertisement through social robots.
DESIGN OPTIMIZATION OF DENTAL IMPLANT USING ADDITIVELY MANUFACTURED LATTICE MATERIALS

A Dental implant is a biocompatible surgical component placed into the jawbone to support dental prosthesis including bridges, crowns, or denture replacements. It might also be used in facial prosthesis operations or orthodontic anchoring. Currently, dental implants are constructed employing solid materials, coated with biocompatible layers. Since bone is a living tissue that is constantly modified in response to external loading, redistributed or reduced mechanical loading might cause bone resorption, implant loosening or interface failure, all of which have been notable problems for orthopedic implants. To address these issues, this paper presents a novel design for dental implant employing lattice materials. A lattice material is a class of open cell engineered cellular solid that is periodically structured and optimized for different applications. A multiscale and multi-objective design optimization framework based on Finite Element Method was developed to, primarily, minimize the bone/implant interface failure and bone loss and secondarily, to minimize the implant weight. Here, we assumed the implant as made of a lattice part (interface zone with the bone) and a solid part (implant core). The design variables included the microscopic parameters of the lattice unit cell as well as thickness of the interface zone. Simulation results show that the proposed design is capable of reducing the interface failure and the bone loss. Additively manufactured Titanium Ti-6Al-4V, a biocompatible material, is used for the new implant manufacturing, eliminating the need for a biocompatible coating.
Grief in children and adolescents: a review

This review article covers the various facets of grief in children and adolescents. The aim is to provide a framework for professionals to enable holistic healing after experiencing a loss. Within this review, different types of responses and theoretical models on the subject have been examined. Due to widespread trauma concerns in our country and within specific populations, traumatic grief in children and common trauma-related symptoms has been included. Lastly, evaluation considerations as well as evidence-based interventions and approaches for grief concerns are discussed.
Active Selection Constraints for Semi-supervised Clustering Algorithms

Semi. -supervised clustering algorithms aim to enhance the performance of clustering using the pairwise constraints. However, selecting these constraints randomly or improperly can minimize the performance of clustering in certain situations and with different applications. In this paper, we select the most informative constraints to improve semi-supervised clustering algorithms. We present an active selection of constraints, including active must. -link (AML) and active cannot. -link (ACL) constraints. Based on Radial-Bases Function, we compute lower-bound and upper-bound between data points to select the constraints that improve the performance. We test the proposed algorithm with the base-line methods and show that our proposed active pairwise constraints outperform other algorithms.