Miracle-dz/UniFAR-FTUs huggingface dataset:
A Gestalt of Data Exploration and Conception

Data sciences have been commercially adopted by various industries as a new arising era of technology but in the field of research still a lot more can be achieved. Data in data warehouse generally reflects the historical data that is separated from the operational data of the industry. The exploration of data is done by the online analytical processing (OLAP). OLAP from its initialization has been a subject of various modifications. It has been reviewed and imposed under various conditions to test its working. Majorly it has been used with various kinds of datasets such, spatial, traditional, sequential, high-dimensional etc. Research now is not only confined to any particular data source in fact a wide spectrum of data sources are to be considered. Apart from analysing the data, visualizing also is an important aspect to be considered, as perception creates a more plausible impression. This paper discusses various existing methodologies of data analysis. It also refers to the frequently used visualization techniques and the various commercial BI tools that are successful and the methods that these tools work on. It also aims towards providing an interface that would analyse, link and visualize the data in the same frame.
Intrusion detection with unlabeled data using clustering

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Managing Supply Risk for Vertically Differentiated Co‐Products

The manufacturing complexity of many high‐tech products results in a substantial variation in the quality of the units produced. After manufacturing, the units are classified into vertically differentiated products. These products are typically obtained in uncontrollable fractions, leading to mismatches between their demand and supply. We focus on product stockouts due to the supply–demand mismatches. Existing literature suggests that when faced with product stockouts, firms should satisfy all unmet demand of a low‐end product by downgrading excess units of a high‐end product (downward substitution). However, this policy may be suboptimal if it is likely that low‐end customers will substitute with a higher quality product and pay the higher price (upward substitution). In this study, we investigate whether and how much downward substitution firms should perform. We also investigate whether and how much low‐end inventory firms should withhold to strategically divert some low‐end demand to the high‐end product. We first establish the existence of regions of co‐production technology and willingness of customers to substitute upward where firms adopt different substitution/withholding strategies. Then, we develop a managerial framework to determine the optimal selling strategy during the life cycle of technology products as profit margins shrink, manufacturing technology improves, and more capacity becomes available. Consistent trends exist for exogenous and endogenous prices.
Androgen Receptor Antagonism and an Insulin Sensitizer Block the Advancement of Vaginal Opening by High-Fat Diet in Mice1

Reduced hypothalamic sensitivity to steroid negative feedback may contribute to the onset of puberty. In high fat-fed rodents, the timing of vaginal opening (VO) is advanced, suggesting that puberty begins earlier. Because obesity can increase androgens, which interfere with normal steroid feedback in adult females, we hypothesized that androgens reduce hypothalamic sensitivity to negative feedback during puberty and that blocking androgen action would prevent advanced VO in high fat-fed mice. Age at VO was examined in mice fed high-fat or low-fat diets from weaning and treated with the androgen receptor antagonist flutamide or vehicle (controls). VO was advanced in high-fat vs. low-fat controls, and flutamide blocked this advancement. VO was also delayed in low fat-fed flutamide-treated females, suggesting involvement of androgens in the timing of normal puberty. We next investigated if high-fat diet-induced insulin resistance contributes to early VO, as elevated insulin can stimulate androgen production. VO was examined in mice on either diet treated with the insulin sensitizer metformin. Metformin blocked high-fat advancement of VO but did not alter the timing of VO in low fat-fed mice. Insulin was elevated in high fat-fed females that had undergone VO compared with age-matched low fat-fed or metformin-treated animals on either diet that had not undergone VO. Together, these data suggest a model in which metabolic changes induced by high-fat diet, including transient increased circulating insulin, act in part by increasing androgen action to influence the timing of puberty in females.
Z-method for power system resource adequacy applications

Utilities have long struggled with establishing resource planning criteria that ensure adequate resources to meet loads at low cost. Historically, many utilities used planning reserve margin criteria. The onset of deregulation brought about a paradigm shift in which it was expected that markets would provide a more efficient mechanism for maintaining resource sufficiency in the course of system demand growth. Major power shortages in the Midwest and California in the wake of deregulation led to a reexamination by most regions of the need for centralized resource planning and integrated resource plans. Reserve margin techniques continue to be used by many resource planners to ensure resource adequacy. Simulation-based probabilistic assessments can provide a more direct measure of adequacy but are quite intensive computationally and therefore only allow exploring a limited number of scenarios. In this paper, we suggest a simple analytical probabilistic approach to maintaining resource adequacy and calculating peak load carrying capability of incremental generating units. The methodology targets a level of system adequacy, rather than a specified reserve margin, under system expansion. It provides a powerful technique for simply calculating probability-based load carrying capability of resource additions without iteratively running computationally intensive stochastic computer models. The technique also provides a simple but effective method for developing portfolios of resources with comparable contributions to system adequacy. The latter may be employed in capacity expansion algorithms as a simpler, more efficient, and more accurate method of determining least-cost resource additions than targeting planning reserve margins. Applications of these techniques to the IEEE Reliability Test System illustrate the methods and verify the results with a stochastic model.
Etika Bisnis Dalam Prespektif Al-Qurâ€™an: Upaya Membangun Bisnis Yang Islami Untuk Menghadapi Tantangan Bisnis Di Masa Depan

Abstrak Bisnis merupakan sesuatu yang sangat penting dalam kehidupan manusia. Tidak heran jika Islam yang bersumber pada al-Qurâ€™an dan Sunnah memberi tuntunan dalam bidang usaha. Bisnis selama ini, dikesankan sebagai usaha mencari keuntungan sebanyak-banyaknya, bahkan harus ditempuh dengan cara kotor dan tidak etis. Etika bisnisÂ sangat penting untuk dikemukakan dalam era globalilasasi yang seringkali mengabaikan nilai-nilai moral dan etika. Karena itu, Islam menekankan agar aktifitas bisnis manusia dimaksudkan tidak semata-mata sebagai alat pemuas keinginan tetapi lebih pada upaya pencarian kehidupan berkeseimbangan disertai prilaku positif bukan destruktif. Penulisan ini bertujuan untuk mengkaji etika bisnis dari sudut pandang al-qurâ€™an dalam upaya membangun bisnis yang Islami untuk menghadapi tantangan bisnis di masa depan. Kesimpulannya Bisnis dalam al-Qurâ€™an disebut sebagai aktivitas yang bersifat materialÂ sekaligus immaterial. SuatuÂ bisnis bernilai, apabila memenuhi kebutuhan material dan spiritual secara seimbang, tidak mengandung kebatilan, kerusakan dan kezaliman. Akan tetapi mengandung nilai kesatuan,keseimbangan, kehendak bebas, pertanggung-jawaban, kebenaran, kebajikan dan kejujuran Â Abstract Business is something very important in human life. No wonder Islam is rooted in the Qur'an and Sunnah provide guidance in the field of business. Business over the years, suggested as a business for profit as much as possible, even to go to the dirty and unethical manner. Business ethics is essential to put forward in the era globalilasasi often ignores moral values â€‹â€‹and ethics. Thus, Islam emphasizes that human business activity is not solely intended as a means of satisfying the desire, but rather on the search for life berkeseimbangan with a positive attitude rather than destructive. This paper aims to examine business ethics from the perspective of the Qur'an in an effort to build an Islamic business to business challenges in the future. Business in the conclusion of the Koran called the activity that is at once immaterial material. A business is worth, if it meets the material and spiritual needs in a balanced, contains no falsehood, destruction and injustice. But it contains the value of unity, balance, free will, accountability, truth, virtue and honesty Keywords : Ehtics, Business,
Know Thy Quality: Assessment of Device Detection by WiFi Signals

Broadcasted WiFi traffic of mobile devices is the foundation of several estimation techniques like location tracking or crowd counting. Many pervasive applications use these techniques to infer the current state of an environment allowing better planning of resources. A vast majority of techniques use WiFi probe request frames, which contain the unique MAC address of a mobile device. This MAC address allows counting of unique devices and thus, their carriers. To ensure privacy, device manufacturers introduced MAC randomization as anonymization technique. This causes a considerable impact on the data quality of many pervasive applications as randomizing devices create fake MAC addresses. Previous works show that randomized MAC addresses can be linked to their origin device using different derandomization techniques. However, these approaches are not feasible in practice as novel randomization techniques are designed to prevent derandomization. Moreover, the frequency of WiFi probe request frames varies significantly on several factors making it difficult to estimate device presence in a timely manner. This paper assesses the challenges with probe request frames using a new data quality framework for device detection. Additionally, alternative detection methods that do not rely on probe request frames are presented. This includes a recently publicized WiFi device detection technique and a new way of detecting devices associated with a third-party network using a feature of the 802.11 protocol.
Developing instrumentation for multi-parametric investigation of mechanisms of mechanosensitivity in ion channels

Mechanosensitive (MS) channels are implicated in pathologies of the renal and pulmonary systems. Abnormal activity in MS channel reduces cell viability causing a variety of pathologies. MS channels are also responsible for sensation of pain and hearing. Despite the vital importance of MS channels, very little is known about the gating mechanisms of these channels. Attempts to study the mechanisms are severely limited by the lack of suitable instrumentation. A better understanding of the structure-function interaction of MS channels is necessary to find pharmacological leads for the pathologies. Activation data based on indirect activation of MS channels using hypo- or hyper-osmotic solutions or viscous drag is confounded by factors like membrane stretch and cytoskeletal stress. Traditional patch clamp does not allow direct access to the cell by other probes. While a planar patch clamp chip may allow for such access, most of the existing planar patch clamp chips are focused on high throughput screening for pharmaceutical targets and have designs that limit multi-parametric studies. We present here instrumentation that combines atomic force microscopy with cellular electrophysiology based on planar patch clamp approach. The instrumentation allows multi-parametric studies on single cells and provides unique insights into mechanisms of activation of not just MS channels, but ion channels in general by combining cellular electrophysiology, optical microscopy and atomic force microscopy. Using HaCaT cells as our model system we have obtained functional maps of distribution MS channels across cell surface. The maps reveal that the distribution of MS channels on HaCaT cells is highly non-uniform and that the channels are present in small clusters instead of dispersed as single entities. Our results using direct mechanical stimulation of single cells reveal that threshold stress level is required in order to activate MS channels and that the stress has a limited spatial range. Investigation of kinetics of the electrical response to direct mechanical stimulation reveals that the MS channels respond to the mechanical signal after a small time lag, which we attribute to the conformational changes necessary while the channel is being gated. We hope that the insights gained from studying the mechanosensitive channels of HaCaT cells will also advance the understanding of MS channels in general. Apart from opening new avenues in MS channel research, the instrumentation can also be useful in studying the dynamics and gating of ligand gated channels by appropriately tagging the AFM cantilever. With further improvements in the speed of AFM imaging, it will also be possible to observe the gating of channels in real time at molecular scale by imaging the channel on the cell while the channel is being gated.
rTuner: A Performance Enhancement of MapReduce Job

In this paper, we present a novel task scheduling algorithm, called rTuner. The key objective of the rTuner is to enhance the reduce task execution time in heterogeneous environments. Because, the reduce task is a very expensive process. The reduce tasks comprise of three phases, unlike to the map task, namely, copy phase, shuffle phase, and reduce phase. Therefore, the rescheduling a straggler reduce task can negatively affect the performance, if the scheduling algorithms does not analyze the underlying situation. The rTuner analyzes the reduce tasks' straggling reason, and tunes the reduce task. If a reduce task becomes straggler, then rTuner reschedules it in a suitable node depending on the situation. Our benchmark result shows that enhancement of reduce tasks boosts up the CPU elapsed time significantly. Moreover, we show the efficacy of the rTuner by extensive experiment in low-cost commodity hardware. The rTuner is able to improve the total job execution time of MapReduce significantly, either a heterogeneous environment or homogeneous environment. The rTuner is capable of reducing the execution time by 86.86 seconds and 100.67 seconds on an average over the Longest Approximate Time to End (LATE) in homogeneous and heterogeneous environment respectively. In addition, the rTuner is also able to improve the execution time by 142.44 seconds and 132.52 seconds over LATE in homogeneous and heterogeneous environment at the best situation respectively.
A threshold of ln n for approximating set cover (preliminary version)

Given a collection<inline-equation><f> <sc>F</sc></f></inline-equation> of subsets of <? Pub Fmt italic>S<? Pub Fmt /italic> ={1,…,<? Pub Fmt italic>n<? Pub Fmt /italic>}, <? Pub Fmt italic>setcover<? Pub Fmt /italic> is the problem of selecting as few as possiblesubsets from <inline-equation> <f> <sc>F</sc></f></inline-equation> such that their union covers<? Pub Fmt italic>S,<? Pub Fmt /italic>, and <? Pub Fmt italic>maxk-cover<? Pub Fmt /italic> is the problem of selecting<? Pub Fmt italic>k<? Pub Fmt /italic> subsets from<inline-equation> <f> <sc>F</sc></f></inline-equation> such that their union has maximum cardinality. Both these problems areNP-hard. We prove that (1 - <? Pub Fmt italic>o<? Pub Fmt /italic>(1)) ln<? Pub Fmt italic>n<? Pub Fmt /italic> is a threshold below which setcover cannot be approximated efficiently, unless NP has slightlysuperpolynomial time algorithms. This closes the gap (up to low-orderterms) between the ratio of approximation achievable by the greedyalogorithm (which is (1 - <? Pub Fmt italic>o<? Pub Fmt /italic>(1)) lnn), and provious results of Lund and Yanakakis, that showed hardness ofapproximation within a ratio of <inline-equation><f><fen lp="par"><lim align="r"><op><rf>log</rf></op><ll>2</ll></lim>n<rp post="par"></fen>/2≃0.72</f></inline-equation> ln <? Pub Fmt italic>n<? Pub Fmt /italic>. For max<? Pub Fmt italic>k<? Pub Fmt /italic>-cover, we show an approximationthreshold of (1 - 1/<? Pub Fmt italic>e<? Pub Fmt /italic>)(up tolow-order terms), under assumption that <inline-equation><f>P≠NP</f><? Pub Caret></inline-equation>.
Two new species of the genus Notropis Rafinesque, 1817 (Actinopterygii, Cyprinidae) from the Lerma River Basin in Central Mexico

Prior findings suggest the existence of undescribed species among the cyprinids of central Mexico. Within the genus Notropis distributed across central Mexico and adjacent areas sometimes reaching southern basins, two groups have been recognized: a Southern Mexican clade and a central Mexican clade. Within this last clade, Notropis calientis has been defined as a species complex of four small minnows inhabiting upland areas. Here we describe two new species of this complex based on morphometric, meristic and genetic characters. Notropis marhabatiensis sp. nov. was diagnosed according to the following set of characters: 7, rarely 8, branched pelvic fin rays (vs. 8, rarely 7 or 9, in other species of the N. calientis complex) and 9, rarely 8, scales in a transverse series (vs. 10, rarely 9 or 11 in N. grandis & N. calientis); a dark, narrow lateral stripe running from around the pectoral fin to the caudal peduncle origin; and twentysix fixed nucleotide positions in the cytochrome b gene. The diagnosis of Notropis grandis sp. nov. was based on: 6, rarely 7, branched fin rays (vs. 7, rarely 6 or 8, in N. marhabatiensis, N. calientis and N. aulidion and 8, rarely 7 or 9, in N. calbazas and N. amecae), 42, rarely 40-41, or 43-45 scales in a lateral series (vs. 40, rarely 37-39, in N. calabazas; 35- 36, rarely 37-39, or 33-34 in N. amecae; 35, rarely 31-34, or 36 in N. marhabatiensis and N. calientis and 34, rarely 30-33, or35 in N. aulidion) and 11 rarely 10 or 12 gill rakers in the first arch; a dark lateral stripe widening from approximately the pectoral fin origin to the dorsal fin origin, forming a slightly convex segment; adult animals larger (n=30, ? =42.6, SD=4.69) relative to N. calientis (n=55, ? = 33.3, SD= 3.28) and N. marhabatiensis sp. nov. (n=30, ? = 30.5, SD=7.57) (F = 16.87; p < 0.001); and finally 31 fixed nucleotide positions in the mitochondrial gene cytochrome b sequence along with four amino acid changes. Calculated genetic distances between the new species and other species of the complex ranged between ? D GTR = 6.1% to 7.4% for N. marhabatiensis and ? DGTR = 6.3% to 8.1% for N. grandis.
Mining Abstract XML Data-Types

Schema integration has been a long-standing challenge for the data-engineering community that has received steady attention over the past three decades. General-purpose integration approaches construct unified schemas that encompass all schema elements. Schema integration has been revisited in the past decade in service-oriented computing since the input/output data-types of service interfaces are heterogeneous XML schemas. However, service integration differs from the traditional integration problem, since it should generalize schemas (mining abstract data-types) instead of unifying all schema elements. To mine well-formed abstract data-types, the fundamental Liskov Substitution Principle (LSP), which generally holds between abstract data-types and their subtypes, should be followed. However, due to the heterogeneity of service data-types, the strict employment of LSP is not usually feasible. On top of that, XML offers a rich type system, based on which data-types are defined via combining type patterns (e.g., composition, aggregation). The existing integration approaches have not dealt with the challenges of a defining subtyping relation between XML type patterns. To address these challenges, we propose a relaxed version of LSP between XML type patterns and an automated generalization process for mining abstract XML data-types. We evaluate the effectiveness and the efficiency of the process on the schemas of two datasets against two representative state-of-the-art approaches.
The Frontier Between Adsorption and Precipitation of Polyacrylic Acid on Calcium Carbonate

Adsorption of polymers on mineral surfaces allowing colloidal stability have widespread applications in industrial processes. The binding mechanism has been quite well described on oxide surfaces. Mainly in terms of hydrogen bonds and electrostatic interactions between charged sites and polymer segments. This phenomenon has been modelized and the influence of pH. Ionic strentgh, and molecular weight can be calculated or predicted. In the case of sparingly soluble substrates such as BaSO4, CaCO3 or CaSO4, several problems arise : the difficulty for the identification of surface sites and the interference of ions coming from the material's solubility. In the case of calcite, the solubility imposes dissolved calcium ions in solution which could complex the polyelectrolyte and reduce its solubility. For that purpose, we have measured the binding energy using microcalorimetry. Microcalorimetric measurements have shown that the adsorption enthalpy is weakly enclothermic: about + 2 kj/mol. Interestingly, this value is very closed to that of calcium complexation with PANa. It is suggested that the driving force for adsorption is the net gain in entropy of the system. The microcalorimetric adsorption isotherm does not show any evidence for a strongly exothermic interaction between positive edges and negative segment of the polyion. Practically, in most cases, adsorption of polymers is calculated from the decrease of its concentration in the solution after separation of the solid by centrifugation. This procedure does not discriminate therefore between real adsorption and phase separation. To answer the question, we have performed adsorption experiments using a dialysis membrane to separate the solid particles from the solution. It has been established that in some circumstances, depending on the relative amount of calcite, calcium ions and polyelectrolyte, precipitation takes place rather than adsorption. This is especially the case at low polymer concentration (less than 2 g/l). Adsorption isotherms were correctly reproduced, taking into account all solution equilibria, including calcium and sodium binding constants and a solubility limit for the calcium polymer complex : the latter was determined by turbidimetric titration for various polymer molecular weights. Our conclusion is that in the presence of divalent ions which is often the case with sparingly soluble minerals, the surface binding of the polyelectrolyte results from a precipitation rather than an adsorption phenomenon.