Miracle-dz/UniFAR-FTUs huggingface dataset:
Hidden projection tomography via phase retrieval algorithm

The reconstruction of an object hidden behind a scattering curtain is a modern topic in the field of imaging, which has stimulated an active scientific production over the past few years. However, most of the work done in the field was in addressing the reconstruction of a bi-dimensional object. Here, instead, we tackle the reconstruction of a three-dimensional fluorescent sample hidden behind an opaque layer. To do so, we show that the auto-correlation operation well behave in projection tomography, letting us to reconstruct a three-dimensional auto-correlation of the object. By having access to such information, it is possible to implement a phase retrieval algorithm to roll back to the actual reconstruction of the specimen.
The criteria for selecting the landfill sites in Baghdad governorate

Administrating and managing solid waste are complicated and challengeable tasks for the local government of Baghdad city. In this area, the landfills site does not satisfy the required local and international criteria. As well as, in Baghdad, selecting the geographical location of Landfill sites is a complex process due to the enormous number of variables that need to be analyzed and considered. This study aims to identify the criteria for landfill site selection in Baghdad governorate. To do so, this study has considered and analyzed three of the main criteria, (which are environmental, political and economic criteria to make recommendations of selecting the location of the landfills site in Baghdad. Within the three main criteria, thirty sub-criteria of the most important criteria were selected for this purpose. From ministries (fieldwork) and theoretical study. In this study, (IBM,SPSS,V23) program was used to analyze the main criteria and sub-criteria and rank them from top-bottom based on their values of Relative Importance Index (RII) technique. The results of this study have reviled that the economic criteria is the most significant main criteria and tenure of land are the most significant sub criteria, which must be significantly considered to make recommendations of selecting the location of the landfills’ sites in Iraq.
Severe Heat Stress Resulted in High Coral Mortality on Maldivian Reefs following the 2015–2016 El Niño Event

Coral cover worldwide has been declining due to heat stress caused by climate change. Here we report the impacts of the 2015–2016 El Niño mass coral bleaching event on the coral cover of reefs located on central and northern atolls of the Maldives. We surveyed six reef sites in the Alifu Alifu (Ari) and Baa (South Maalhosmadulu) Atolls using replicate 20 m benthic photo transects at two depths per reef site. Live and recently dead coral cover identified from images differed between reef sites and depth. Recently dead corals on average made up 33% of the coral assemblage at shallow sites and 24% at deep sites. This mortality was significantly lower in massive corals than in branching corals, reaching an average of only 6% compared to 41%, respectively. The best predictors of live coral cover were depth and morphology, with a greater percentage of live coral at deep sites and in massive corals. The same predictors best described the prevalence of recently dead coral, but showed inverse trends to live coral. However, there was high variability among reef sites, which could be attributed to additional local stressors. Coral bleaching and resulting coral mortalities, such as the ones reported here, are of particular concern for small island nations like the Maldives, which are reliant on coral reefs.
Adsorption of Mercury from Wastewater by Fly Ash

The effectiveness of fly ash in adsorbing mercury from wastewater has been studied. Batch kinetic and isotherm studies have been carried out to determine the effect of contact time, pH and temperature on the adsorption. It has been found that a contact time of 2 h is necessary for the adsorption to reach equilibrium. The optimum pH was found to be between 5.0 and 5.5. The adsorption isotherm data were described adequately by both the Langmuir and the Freundlich models. The adsorption process was found to be endothermic.
Efficient driver and high accuracy sense ASICs for piezoelectric micro-mirrors

This paper presents a full system, based on two dedicated ASICs, to drive and control a resonant piezoelectric micromirror. The driving ASIC, exploiting the essentially capacitive-like pseudo-differential behavior of the micro-mirror, implements an innovative and efficient energy recovery topology. With only two additional external capacitors, C·V2 ·f load power consumption can be reduced by a theoretical factor 6. It works up to 40V driving voltage, providing two trapezoidal signals in phase opposition up to 65kHz driving frequency in order to be compatible with most of the micromirror devices. Driving signal amplitude can be adjusted at 15 bits resolution through a novel low-frequency noise free circuit for opening angle control (OAC), briefly described. Classical resistive Wheatstone bridge, designed close to the rotational springs, provides a voltage signal representative of the micro-mirror position. Sensing ASIC is aimed to bias the bridge and read the output voltage extracting high-resolution data for mirror resonance frequency control. A new circuital solution allows to compensate for resistive bridge sensitivity variations in temperature without any additional sensor on the mirror. The two ASICs have been diffused in BCD 0.18mm process at 3.3V voltage supply, preliminary step for a full integration of driving and sensing parts. Silicon results show that driver is effectively able to reduce load power consumption by a factor > 5 with only 2.5mW additional consumption at 40V and 25kHz driving signal, on top of integrated Boost converter efficiency. Control algorithms, based on sensing data, allow to keep stable resonance frequency providing 7mdegRMS mechanical accuracy over ±15deg opening angle.
Diagnosing the Temperature Sensitivity of Ecosystem Respiration in Northern High‐Latitude Regions

The accurate estimation of the temperature sensitivity of ecosystem respiration (Q10) is important to understanding the terrestrial ecosystem carbon cycle, especially in northern high‐latitude regions (NHLs). Q10 estimated by the conventional approach at the annual scale is influenced by seasonal confounding effects. Based on singular spectrum analysis, scale‐dependent parameter estimation (SCAPE) is considered an effective approach to eliminate confounding effects. Nevertheless, the performance of the decomposition and reconstruction schemes in the SCAPE approach in Q10 estimation remains limited, which hampers its further application in larger‐scale systems. In this study, we utilized an improved scale‐dependent parameter estimation (iSCAPE) approach to analyze trends of the unconfounded Q10 and its environmental controls in NHLs. The results showed that in NHLs, the confounding effects in forest ecosystems were smaller than those in cropland and grassland ecosystems. The apparent Q10 estimated by the conventional approach varied among 32 sites with a mean value of 2.82 (95% confidence interval (CI): 2.72–2.91), while the mean intrinsic Q10 estimated by the iSCAPE approach across the 32 sites was 1.53 (95% CI: 1.48–1.57). The apparent Q10 increased with the annual mean temperature. The intrinsic Q10 decreased with the increasing of spatial temperature gradient. The current study indicates that ecosystem respiration in NHLs is less sensitive to climate warming than previously reported. The seasonality of ecosystem respiration should be eliminated when estimating Q10 to avoid overestimating climate‐carbon cycle feedback.
People, Ideas, Milestones: A Scientometric Study of Computational Thinking

The momentum around computational thinking (CT) has kindled a rising wave of research initiatives and scholarly contributions seeking to capitalize on the opportunities that CT could bring. A number of literature reviews have showed a vibrant community of practitioners and a growing number of publications. However, the history and evolution of the emerging research topic, the milestone publications that have shaped its directions, and the timeline of the important developments may be better told through a quantitative, scientometric narrative. This article presents a bibliometric analysis of the drivers of the CT topic, as well as its main themes of research, international collaborations, influential authors, and seminal publications, and how authors and publications have influenced one another. The metadata of 1,874 documents were retrieved from the Scopus database using the keyword “computational thinking. ” The results show that CT research has been US-centric from the start, and continues to be dominated by US researchers both in volume and impact. International collaboration is relatively low, but clusters of joint research are found between, for example, a number of Nordic countries, lusophone- and hispanophone countries, and central European countries. The results show that CT features the computing’s traditional tripartite disciplinary structure (design, modeling, and theory), a distinct emphasis on programming, and a strong pedagogical and educational backdrop including constructionism, self-efficacy, motivation, and teacher training.
BiGRU-Multi-Head Self-Attention Network for Chinese sentiment classification

The rapid development of Internet and the extensive user base have led to a significant increase in the propagation speed of information and public opinion. Quick and accurate sentiment analysis of public opinion can help analyze and manage public opinion. Since BiGRU can simplify network parameters, and the Multi-Head Self-Attention(MHSA) mechanism can learn long-distance features more accurately and quickly. In this study, we propose a BiGRU-MHSA network to perform Chinese sentiment classification. The innovation of the model lies in the combination of BiGRU and MHSA in order to focus on several semantic centers and comprehend the whole text more precisely and efficiently. At the same time, we use the Chinese comment datasets on Weibo to verify the effectiveness and accuracy of the model. From the experimental results, we find that our proposed model improves the accuracy by about 1% on different comments datasets without consuming too much computing resources.
Policy on optimization of household waste and hazardous waste management based on community empowerment at the local level

Central Bureau of Statistics (BPS) survey in 2018 showed that only 1.2% of households recycle waste and around 66.8% incinerate waste. Low community participation has a negative impact on landfill dependence, managing-cost, sustainable waste management, and the environment. This study aims to optimize community-based household and hazardous waste management at the local government level. This research used policy analysis, field surveys, and in-depth interviews regarding the issuance of Jakstrada. However, Jakstrada is not necessarily the answer to the waste problem. This is in accordance with the target to be achieved from the preparation of the Jakstrada, whereby in 2025 the national waste problem is 100% managed, with no more waste being dumped into the river or open burning in the environment. Waste is encouraged to be managed by applying the 3R (reduce-reuse-recycle) principle, with the key strategy by changing the community’s paradigm to build awareness in managing their waste. As the hierarchy of sustainable waste management emphasizes the importance of public participation and changes their perception of waste management as the first step to achieve waste reduction, support for reliable technology is also needed to recycle and reuse waste.
Service Analysis at Investment and One-Stop Integrated Service and Labor Office (DPMPTSP Labor) Pekalongan Regency

Pekalongan local government through the Investment and One-Stop Integrated Service and Labor Office (DPMPTSP Labor) is currently actively implementing innovation. One of the innovations is the Integrated Licensing Information System of Pekalongan Regency which is abbreviated as SIP TENAN and Steady Entrepreneur Solutions ( Shinta Sah Bu ). This research goal is to define the service and examine the service quality in the DPMPTSP Labor Pekalongan Regency. It used the descriptive qualitative method. Moreover, the result showed that there are two models of DPMPTSP Labor Pekalongan Regency services those are manual and OSS ( SIP TENAN , and SINTA SAH BU ). The results revealed several service indicators in the DPMPTSP Labor Pekalongan Regency aren't maximal, those are the timeliness of services, and also there are shortages, especially in the Human Resources (HR) sector. The influencing factors found are the limitations of the person serving, the limited time, the social level of the society, the economic level, as well as the different levels of education. The advice can be given are, it needs Helpdesk personnel addition, more enhanced socialization of OSS, the addition of human resources, as well as to develop cooperation especially for the image design of the business locations' sector.
Communities of practice or communicative rationality? A study of autonomous peer assisted learning

Defined as ‘networks of learning relationships among students and significant others’, peer assisted learning takes a bewildering array of forms in higher education. A useful way to conceptualise these is to draw from ideas of communities of practice and communicative rationality, with the degree of student autonomy a third key element. We illustrate this approach with a study of Kuppi, an example of peer assisted learning initiated and organised entirely by students. We interviewed undergraduate participants from six state universities in Sri Lanka and found strong support for this model of peer assisted learning from student learners and student tutors. These classes are characterised by informality and discussion, flexibility in timing and location and a focus on assessments. Students determine the content and who teaches, whilst tutors give their time without payment, out of fraternity and to improve their own learning and skills. The theory of communicative rationality helped explain much of the attraction of this form of peer assisted learning. There was evidence for a strong community of practice; however apart from peer tutors aspiring to become academics, this involved mostly reinforcement of student identity rather than transformation into emerging roles. The high levels of engagement and student autonomy shown by Kuppi challenge suggestions that peer assisted learning must be organised by tutors if it is to be effective.
Vienna Rectifier-Fed Squirrel Cage Induction Generator Based Stand-Alone Wind Energy Conversion System

Back-to-back voltage source converters are normally preferred for interfacing squirrel cage induction generators (SCIG) with loads in stand-alone wind power generation applications as they allow for maximum power point tracking. However, the total converter losses tend to be very high, especially near the rated wind speed. Therefore, to reduce the power converter related losses, a Vienna rectifier is utilized as the machine-side converter in this article to interface the SCIG. Owing to the limited reactive power handling capability of the Vienna rectifier, a fixed capacitor bank is also required to provide the excitation VAR for the variable speed SCIG. In this article, a new computational method is proposed to calculate the value of this fixed capacitance based on maximizing the yearly energy output from the wind energy conversion system. A voltage sensorless vector control scheme for the Vienna rectifier-fed SCIG with the reference frame oriented along the machine terminal voltage is also proposed, which adheres to the operating limits of the Vienna rectifier and gives much better dynamic performance under load and wind speed transients compared to similar Vienna rectifier based variable speed constant frequency generating systems reported earlier in the literature.
Microwave Blanching: An Emerging Trend in Food Engineering and its Effects on Capsicum annuum L

Blanching is the most widely used processing techniques that increases the shelf life of fruits, vegetables and canned food. It softens the fruits and vegetables, aids in peeling and is vital to the canning process. This review elucidates the pros and cons of blanching – both wet and dry – on food products, with a special reference to bell peppers. Agricultural products with high nutritional value and substantial market demand need to be preserved to retain freshness and nutritional qualities till it reaches the processing industry or the consumer. In this review, we described the various attributes of the wet and dry blanching processes with the aim of providing a guide for the reader to design a blanching technique that may maximize the retention of nutrients, micronutrients and volatiles while minimizing the retention of enzymes that cause degradation of fruits and vegetables. Practical Applications This study shows that microwave blanching of food products is far better approach than other blanching methods as it causes minimal/lesser damage unlike IR blanching and wet blanching methods. This can be said based on the fact that microwave blanching does not involve water as required in the process of wet blanching and, thus, reduces the chances of microbial contamination. The results found in this study can be applied in the development of an optimized blanching approach as to minimize the retention of enzymes that causes degradation and to maximize the retention of nutrients, micronutrients and volatiles.
On Graded 2-Prime Ideals

The purpose of this paper is to introduce the concept of graded 2-prime ideals as a new generalization of graded prime ideals. We show that graded 2-prime ideals and graded semi-prime ideals are different. Furthermore, we show that graded 2-prime ideals and graded weakly prime ideals are also different. Several properties of graded 2-prime ideals are investigated. We study graded rings in which every graded 2-prime ideal is graded prime, we call such a graded ring a graded 2-P-ring. Moreover, we introduce the concept of graded semi-primary ideals, and show that graded 2-prime ideals and graded semi-primary ideals are different concepts. In fact, we show that graded semi-primary, graded 2-prime and graded primary ideals are equivalent over Z-graded principal ideal domain.
Novel single‐armed modular multilevel converter for reducing total converter capacitance

During normal operation of a conventional Modular Multilevel Converter (MMC), half of its capacitors remain bypassed at any time instant, increasing the total required capacitance for converter operation, and in turn leading to a larger size and volume MMC for a target capacitor voltage ripple limit. This paper presents a novel MMC topology that utilizes all converter capacitors at all times during the operation. Therefore, the total required capacitance for generating a voltage waveform with the same number of levels and the same target capacitor voltage ripple limit is greatly reduced compared to conventional MMCs. The new topology inherits all the desirable features of conventional MMCs such as modularity, reliability, and scalability, and is compatible with many of the previously proposed control techniques for conventional MMCs. The process of synthesizing the proposed MMC topology and a new voltage balancing scheme as well as the dynamic model and capacitor sizing procedure for the proposed MMC are reported in the paper. Furthermore, experimental results are presented to evaluate the performance of the proposed converter.
Effect of Curing Time on Bond Failurerct Based on Two Light Cure Units used in Bonding Orthodontic Brackets

In routine orthodontic practice, we usually aim at having a reduced chair side time while bonding as well as an appropriate bond strength for the brackets till the treatment completion. This is dependent on several factors which affect the quality of bond obtained between the bracket and the tooth structure. One such is the depth of cure by using different curing lamps. This study aimed at comparing the rate of bracket bond failure of brackets when bonded using light cure units with different curing time (3S and 20S). This was a randomized control trial performed as a split mouth study among patients who came for orthodontic correction of malocclusion. Among them, 24 patients were selected and split mouth study was performed. For this dental arch of each patient was split among two groups (Group A and Group B). MBT Stainless steel orthodontic brackets were bonded in both the dental arches. Group A was cured with 3 second light cure unit in I and III quadrant and 20 second light cure unit in I and III quadrant and vice versa for group B. The number of bond failures at the end of 4 weeks and 8 weeks were assessed. Bond failures among both the groups were summarized. Independent t test was used to assess the statistical difference between the groups. Overall it was evident that the bond failure was greater clinically in the group cured with 20 second curing light especially in the mandibular arch and the posterior teeth.
Human eye-fixation prediction based on Convolutional Neural Network in RGB images

Using neural networks to simulate and predict human visual attention mechanism is a hot topic in the field of computer vision. In this paper, we propose an end-to-end encoder-decoder network architecture to predict the fixation mechanism of human eyes, which consists of modules composed of multiple convolutional layers with different expansion rates to capture multi-scale features in parallel. In addition, the attention module is added on the basis of the encoder network structure, and a self-attention mechanism is introduced to capture the visual feature dependency in the channel size, and the semantic interdependence in the channel dimension is modeled to predict the visual salience more accurately. In this paper, five data sets and selected examples are used to demonstrate the effectiveness of the proposed method. Our method achieves competitive and consistent results on multiple evaluation indicators on MIT1003 and CAT2000 datasets.