Strange Behavior Research Articles

Strangely mined bitcoins: Empirical analysis of anomalies in the bitcoin blockchain transaction network.

The blockchain technology introduced by bitcoin, with its decentralised peer-to-peer network and cryptographic protocols, provides a public and accessible database of bitcoin transactions that have attracted interest from both economics and network science as an example of a complex evolving monetary network. Despite the known cryptographic guarantees present in the blockchain, there exists significant evidence of inconsistencies and suspicious behavior in the chain. In this paper, we examine the prevalence and evolution of two types of anomalies occurring in coinbase transactions in blockchain mining, which we reported on in earlier research. We further develop our techniques for investigating the impact of these anomalies on the blockchain transaction network, by building networks induced by anomalous coinbase transactions at regular intervals and calculating a range of network measures, including degree correlation and assortativity, as well as inequality in terms of wealth and anomaly ratio using the Gini coefficient. We obtain time series of network measures calculated over the full transaction network and three sub-networks. Inspecting trends in these time series allows us to identify a period in time with particularly strange transaction behavior. We then perform a frequency analysis of this time period to reveal several blocks of highly anomalous transactions. Our technique represents a novel way of using network science to detect and investigate cryptographic anomalies.

Measuring the Nature of Individual Sequences

This study reviews and compares indicators that can serve to characterize numerically the nature of state sequences. It also introduces several new indicators. Alongside basic measures such as the length, the number of visited distinct states, and the number of state changes, we shall consider composite measures such as turbulence and the complexity index, and measures that take account of the nature (e.g., positive vs. negative or ranking) of the states. The discussion points out the strange behavior of some of the measures—Elzinga’s turbulence and the precarity index of Ritschard, Bussi, and O’Reilly in particular—and propositions are made to avoid these flaws. The usage of the indicators is illustrated with two applications using data from the Swiss Household Panel. The first application tests the U-shape hypothesis about the evolution of life satisfaction along the life course, and the second one examines the scarring effect of earlier employment sequences.

Alzheimer Disease and Mood.

Alzheimer disease (AD) is a widely known type of dementia. It is an irreversible brain disease that slowly affects memory, thinking, and behavior. In the brain, brain cells talk to each other with special signals, helping people control their minds and bodies. People with AD have lower amounts of these signals. One possible reason for this is that people with AD also have a buildup of a specific protein called amyloid-β that prevents their brain cells from communicating with each other. When this happens, a person begins to act and think differently. They may start to show strange behavior or experience delusions. The person may also start showing mood symptoms like aggression, depression, or anxiety. Together, mood symptoms are also called neuropsychiatric symptoms (NPS). In addition, people with AD gradually lose cognitive function. Loss of cognitive abilities are separate from NPS. They include things like troubles with reasoning, memory, problem solving, or mathematical or verbal skills.

Eddy current characterization on material surface during high power application – A benchmark experiment

Eddy current is creating a lot of problems in high voltage and high current experiments. High eddy current can cause significant heating and deteriorating electromagnetic forces on mechanical structures. The strange behavior of eddy current will sometime leads to collapse of mechanical structures in large experimental set ups. Measurement of eddy current is very important in cases where its magnitude exceeds a certain value. Here we suggest a benchmark experiment for measuring eddy current developed on a metallic surface during a high current discharge. In this experiment, a torus shaped steel (SS 304) tube is considered which resembles super conducting reaction chamber used in fusion experiments. These experiments are under high power applications and hence the mechanical structure will be subjected to eddy current impacts which needs to be studied well in early to understand the possible after effects. Results from a benchmark experiment with similar prototype will help in such situations to derive the system parameters under actual experiment situations. Here, coil is inserted through the torus and a high current discharge is given through that coil using a capacitor and thyristor control circuit. Due to this high current discharge, eddy current will be developed on the torus surface. Practical measurement of current discharged can be calculated using a calibrated Rogowski coil. Another calibrated Rogowski coil is wound across the torus structure to pick the eddy current. Rogowski coil will give the di/dt value. Integrating the output will give the value of current. Subtracting the two Rogowski coil output will give the eddy current value. Further, the experimental set up is modeled and simulated in ANSYS MAXWELL and eddy current obtained from simulation is compared with those we obtained practical values. The proposed experimental setup is a Non Destructive Test (NDT) and therefore this can be easily executed in any test atmosphere. The validated method finds its application in particle accelerators and fusion research.

Hubungan Pengetahuan dan Dukungan Keluarga dengan Cara Merawat Pasien Halusinasi di Wilayah Kerja Puskesmas Kebun Handil Kota Jambi

Schizophrenia is a disease that affects the brain and causes strange thoughts, perceptions, emotions, movements and behaviors. One of the symptoms of schizophrenia is hallucinations. Hallucinations are one of the symptoms of sensory perception disturbance experienced by mental patients. The role and duty of family health is to care for family members who are sick, the family plays an important role as a support during the recovery and rehabilitation of patients, the support provided by the family will prevent recurrence. The purpose of this study was to determine the relationship between knowledge and family support by caring for hallucination patients in the work area of Kebun Handil Health Center, Jambi City. This study used an analytical survey method with a cross sectional design which aims to determine the relationship between knowledge and family support in caring for hallucinated patients using purposive sampling technique. The total population in this study were 144 people with a total of 53 respondents. The results of this study indicate that there is a relationship between family knowledge and how to treat hallucination patients with a P-value of 0.00. There is a relationship of family support by caring for hallucinatory patients with a P - Value of 0.00. It is hoped that the family will provide free time, sufficient knowledge and extra attention in helping patients recover

Quantum criticality in twisted transition metal dichalcogenides.

Near the boundary between ordered and disordered quantum phases, several experiments have demonstrated metallic behaviour that defies the Landau Fermi paradigm1-5. In moiré heterostructures, gate-tuneable insulating phases driven by electronic correlations have been recently discovered6-23. Here, we use transport measurements to characterize metal-insulator transitions (MITs) in twisted WSe2 near halffilling of the first moiré subband. We find that the MIT as a function of both density and displacement field is continuous. At the metal-insulator boundary, the resistivity displays strange metal behaviour at low temperatures, with dissipation comparable to that at the Planckian limit. Further into the metallic phase, Fermiliquid behaviour is recovered at low temperature, and this evolves into a quantum critical fan at intermediate temperatures, before eventually reaching an anomalous saturated regime near room temperature. An analysis of the residual resistivity indicates the presence of strong quantum fluctuations in the insulating phase. These results establish twisted WSe2 as a new platform to study doping and bandwidth-controlled metal-insulator quantum phase transitions on the triangular lattice.

Multiple attractors and strange nonchaotic dynamical behavior in a periodically forced system

Multiple attractors and strange nonchaotic dynamical behavior in a periodically forced system

Nutritional Assessment of Autism Spectrum Disorder in Benghazi

Autism spectrum disorder (ASD) is a neurodevelopment condition characterized by persistent deficits in social communication and social interaction, as well as restricted and repetitive patterns of behavior that present during early development and result in clinically significant impairment. The study was carried on (62) male and (23) female their age group range from (< 5year to >14 year) who are assessed through distribution of detailed questionnaires. The participant was selected by communicating with their parents and caregivers by a sent copy of questionnaires. Weight and height was measured after completion of the questionnaire. The laboratory tests were obtained from medical records of participants. Data set was exported to SPSS for complete analysis. In the present study, the total number of subjects involved was 85 with ages ranging from <5 years to >14 years old and average age was2.5 years. The peak of autism ages was shown at age group 5y-10y (44.7%); Autism was significantly increases among male than female, but are not consider consistent; the most onset of strange behaviors among autism between age group 1y-3y (48.2%). Autism subjects were shown mostly complains of GIT symptoms and anemia. This data together suggested that hyperactivity, eating difficulty, food sensitivity, and certain medications, in addition to limited fiscal access could play part in the dietary pattern choice, feeding practice and body weight changes among autism.

Strange behaviour of transport properties in novel metal thiocyanate based ionic liquids

In a previous paper some of us presented the structure and some properties of a new family of ionic liquids, ILs, with a common cation, 1-butyl-3-methyl imidazolium (the popular [C4C1Im]+ or [BMIM]+) and a variety of anions based in thiocyanate (SCN)−: one reference sample and ten with anionic metal complexes of different valences: AlIII, MnII, FeIII, CrIII, NiII, HgII, ZnII, CoII and CuI, resulting, respectively, [BMIM](SCN), [BMIM]3 Al(SCN)6, [BMIM]4 Mn(SCN)6, [BMIM]3 Fe(SCN)6, [BMIM]3 Cr(SCN)6, [BMIM]4 Ni(SCN)6, [BMIM]2 Hg(SCN)4, [BMIM]2 Zn(SCN)4, [BMIM]2 Co(SCN)4 and [BMIM]3 Cu(SCN)4. In this paper we show experimental measurements of electrical conductivity of these ILs in a broad temperature range (about 90 K). Viscosity has been measured for six compounds in a wide temperature range. In addition, the diffusion coefficient for both ions forming the IL has been measured for some of the samples using NMR-Dosy technique. In spite of being very similar compounds from a chemical point of view, they present very different transport property values. Thus, viscosity varies more than two orders of magnitude among those metal thiocyanate ILs, being the highest for the compound with Al and the lowest for that with Hg. Moreover, differences between ionic conductivity and diffusion coefficient values extend more than one order of magnitude among the thiocyanate ILs. These three properties will be related in pairs, thus through Walden’s rule we compare molar conductivity and fluidity, while using Kohlrausch’s law and Nerst-Einstein equation molar conductivity and diffusion coefficient are related. Also, diffusion coefficient and fluidity (the inverse of viscosity) are compared by means of Stokes-Einstein relationship. In addition, we calculate the Laity interionic friction coefficients for both anions of the IL with Hg. Finally, a theoretical model is suggested to explain all the experimental evidences reported.

Ce-Site Dilution in the Ferromagnetic Kondo Lattice CeRh6Ge4 Supported by the National Natural Science Foundation of China (Grant Nos. 12034017 and 11974306), the National Key R&D Program of China (Grant Nos. 2017YFA0303100 and 2016YFA0300202), and the Key R&D Program of Zhejiang Province, China (Grant No. 2021C01002).

The heavy fermion ferromagnet CeRh6Ge4 is the first example of a clean stoichiometric system where the ferromagnetic transition can be continuously suppressed by hydrostatic pressure to a quantum critical point. In order to reveal the outcome when the magnetic lattice of CeRh6Ge4 is diluted with non-magnetic atoms, this study reports comprehensive measurements of the physical properties of both single crystal and polycrystalline samples of La x Ce1–x Rh6Ge4. With increasing x, the Curie temperature decreases, and no transition is observed for x > 0.25, while the system evolves from exhibiting coherent Kondo lattice behaviors at low x to the Kondo impurity scenario at large x. Moreover, non-Fermi liquid behavior is observed over a wide doping range, which agrees well with the disordered Kondo model for 0.52 ≤ x ≤ 0.66, while strange metal behavior is revealed in the vicinity of x c = 0.26.

Effects of Implant Temperature, Backside Contamination and Scribe Lines on Room Temperature Photoluminescence Measurements on Silicon

To investigate the effect of implantation temperature on the damage to a Si lattice, room temperature photoluminescence (PL) spectra were measured from highly-channeled MeV 11B+ implanted Si wafers with different implant temperatures (25 °C and 450 °C) after annealing at 950 °C for 3 min in N2. Small pieces from the wafers were used for PL characterization. The implanted Si wafer piece at the elevated temperature resulted in higher overall PL intensity under both excitation wavelengths suggesting lesser lattice damage than the Si wafer implanted at room temperature. Unexpectedly large PL intensity variations were observed from PL area mapping of both wafer pieces. In addition, strange behaviors of localized PL intensity variations, with opposite trends between 670 nm and 827 nm excitation PL measurements were observed near the scribe lines and sample number markings on the backside. The PL intensity was increased under 670 nm excitation while it was decreased under 827 nm excitation. Possible reasons for this strange behavior were discussed based on experimental results and analysis. PL measurement is verified to be very sensitive to the surface condition, interface, bulk and backside conditions of the Si. For reliable PL measurement, backside contamination and scratches, such as scribe lines, should be avoided.

A novel 4 dimensional hyperchaotic system with its control, Synchronization and Implementation

This paper presents a new hyperchaotic system which shows some interesting features, the system is 4-dimensional with 4 nonlinearities. An extensive numerical analysis has showed that the system has some interesting features and strange behaviors. The numerical analysis includes studying the effect of system parameters and initial conditions. Some of the important properties of the system with parameter set, in which the system is hyperchaotic, such as Lyapunov exponents and Lyapunov dimension, dissipation and symmetry are found and discussed. In the next part of our work, a tracking controller for the proposed system is designed and then a synchronization control system for two identical systems is designed. The design procedure uses combination of a simple synergetic control with adaptive updating laws to identify the unknown parameters derived basing on Lyapunov theorem. Hardware implementation based on microcontroller unit (MCU) board is proposed and tested and used to experimentally validate the designed control and synchronization systems. As an application, the designed synchronization system is used as a secure analogue communication system. Using MATLAB, Simulation study for the control and synchronization systems is presented. The simulation and experimental study have been showed excellent results.

Parasite or poisoner

Chemical Biology C ordyceps fungi are bizarre and disturbing parasites that infect insects, sometimes compelling them to exhibit strange behaviors that help disperse fungal spores to new hosts. These fungi produce a number of small molecules that presumably help in this type of takeover and could have valuable applications in medicine. Klein et al. synthesized and characterized the cytotoxic cyclic peptide cordyheptapeptide A, along with a number of variants, to establish the structure-activity relationship and identify the cellular target(s). Cytological profiling suggested a mechanism of action similar to that of protein synthesis inhibitors. The authors confirmed that elongation factor 1A, which is crucial in ribosomal protein synthesis and is a common cytotoxic target, is also a target for this group of cyclic peptides. ACS Chem. Biol. 10.1021/acschembio.1c00094 (2021).

Knowledge of the community regarding mental health problems: a cross-sectional study

BackgroundKnowledge of the community regarding mental health problems has a remarkable impact on the attitude, the help-seeking path, and prevention of stigma and discrimination against patients with mental health problems. It is also the cornerstone for designing evidence-based community mental health interventions. However, the evidence is scarce in developing countries like Ethiopia. This study aimed to assess the knowledge regarding mental health problems and associated factors among communities of Jimma Zone, Oromia, Ethiopia.MethodsA community-based cross-sectional study was conducted in the Jimma zone from March 1 to 22, 2020. A structured, pretested, and interviewer-administered questionnaire was used to collect data from 420 study participants selected through a systematic sampling technique. The knowledge about mental health was measured by the adapted version of the Mental Health Knowledge Schedule tool. Data were entered into Epi-data version 3.1 and exported to SPSS version 23.0 for analysis. Multivariate logistic regression analysis was done, and p-value < 0.05 and 95% CI were used to determine the predictors of the outcome variable.ResultsThe overall knowledge score showed (188, 44.8%) of the respondents had inadequate knowledge. Moreover, (75, 17.9%) of the respondents reported psychiatric disorders are contagious, and (138, 32.9%) mentioned leaving alone is the treatment for mental illness. Talking or laughing alone and showing strange or unusual behaviors were described as symptoms of mental illness by the majority (407, 96.9%) and (403, 96.0%) of respondents, respectively. Brain dysfunction was attributed to the cause of mental illness by most (390, 92.9%) of the study participants. Similarly, the percentage of responses that attributed the causes of mental illness to possession by an evil spirit, God’s punishment, and witchcraft were significantly high (368, 87.6%), (321, 76.4%) and (259, 67.1%), respectively. Furthermore, regression analysis showed that respondents who were able to read and write were 64% less likely to have adequate knowledge than those in secondary school and above educational status (AOR = 0.34, 95% CI (0.16–0.69)).ConclusionKnowledge of mental illness among the general public was relatively poor and higher levels of education were associated with good knowledge of mental health problems; this suggests the need for due emphasis on public education to improve the mental health literacy status of the community.

Bourdonnements de l’Autre. Trois jours chez ma tante d’Yves Ravey

The novel Trois jours chez ma tante (2017) by Yves Ravey presents a main character who fits well in the tradition of the narrators in the author’s work: untrustworthy and in the throes of a mania which leads him to betray the people who are close to him. I propose to explain the strange behaviour of this narrator, a certain Marcello Martini, with reference to psychoanalysis, and in particular to Jacques Lacan’s theories pertaining to obsessional neurosis. We shall see that Marcello’s tendency towards betrayal and self-destruction reveals itself to be a “jouissance,” an effect of the position he occupies within the family structure, where he finds himself alienated from the mother and subject to the paternal law. More broadly, this study examines the presence of evil in Ravey’s work, which can be seen to be less an arbitrary or an intrinsic phenomenon than the consequence of a psychological structure which puts the very existence of the human subject into question.

Strange metal behavior of the Hall angle in twisted bilayer graphene

Twisted bilayer graphene (TBG) with interlayer twist angles near the magic angle $\approx 1.08^{\circ}$ hosts flat bands and exhibits correlated states including Mott-like insulators, superconductivity and magnetism. Here we report combined temperature-dependent transport measurements of the longitudinal and Hall resistivities in close to magic-angle TBG. While the observed longitudinal resistivity follows linear temperature $T$ dependence consistent with previous reports, the Hall resistance shows an anomalous $T$ dependence with the cotangent of the Hall angle cot $\Theta{_H} \propto T^2$. Boltzmann theory for quasiparticle transport predicts that both the resistivity and cot $\Theta{_H}$ should have the same $T$ dependence, contradicting the observed behavior. This failure of quasiparticle-based theories is reminiscent of other correlated strange metals such as cuprates.

Superluminal light propagation in a normal dispersive medium

The propagation of a Laguerre-Gaussian (LG) beam through a dispersive medium is investigated. The effect of the doughnut-like intensity profile of the probe LG beam on the group velocity is studied. We find an analytical expression for the group velocity out of the optical axis and compare with its projection onto the propagation axis. It is turned out that the group velocity vector is along the optical axis at the waist of the beam and the Rayleigh range. We numerically and analytically investigate the effect of the helical phase front of the coupling LG field on the group velocity of the probe LG field in a four-level double V-type quantum system. Our analysis predicts a strange behavior for the group velocity of the probe LG beam inside a normal dispersive medium in the gain region so that it can exceed the speed of light in free space, leads to the gain-assisted superluminal light propagation in normal dispersion. Such an unusual propagation of the LG beam results from the distortion of its helical phase front via the classical interference of the planar and LG fields. The obtained results may find some potential applications in increasing the velocity of the information transmission in optical communications.

On fixpoints of Higham’s function

We study the strange behavior in floating-point arithmetic of a function proposed by Nicholas Higham, consisting of repeated square roots extraction followed by the same number of times squaring and find its fixpoints. For IEEE standard double precision floating point numbers the fixpoints have the form \[ x \in \left\{\left( 1+k\mathrm{eps}\right) ^{\frac{1}{\mathrm{eps}}},\quad k=\left[ -745:\frac{1}{2}:-\frac{1}{2},0:709\right]\right\} \cup \{0\} , \] where \mathrm{eps} is the machine epsilon."

The genomic origin of Zana of Abkhazia.

Enigmatic phenomena have sparked the imagination of people around the globe into creating folkloric creatures. One prime example is Zana of Abkhazia (South Caucasus), a well-documented 19th century female who was captured living wild in the forest. Zana's appearance was sufficiently unusual, that she was referred to by locals as an Almasty-the analog of Bigfoot in the Caucasus. Although the exact location of Zana's burial site was unknown, the grave of her son, Khwit, was identified in 1971. The genomes of Khwit and the alleged Zana skeleton were sequenced to an average depth of ca. 3× using ancient DNA techniques. The identical mtDNA and parent-offspring relationship between the two indicated that the unknown woman was indeed Zana. Population genomic analyses demonstrated that Zana's immediate genetic ancestry can likely be traced to present-day East-African populations. We speculate that Zana might have had a genetic disorder such as congenital generalized hypertrichosis which could partially explain her strange behavior, lack of speech, and long body hair. Our findings elucidate Zana's unfortunate story and provide a clear example of how prejudices of the time led to notions of cryptic hominids that are still held and transmitted by some today.

Pre-and Coseismic Analysis of the Mw7.6 Padang Earthquake 2009 from Geodetic Approach

On September 30, 2009, an Mw7.6 earthquake hit the west coast of Sumatra. This main shock caused the crustal deformation affecting a wide area in the western part of Sumatra. This paper presents the analysis of the deformation recorded by the Sumatran GPS Array (SuGAr) network. More than 40 GPS stations were installed to continuously monitor the deformation in Sumatra, among 12 of them is known to have been deformed by this earthquake. We processed whole data in 2009 to understand the dynamics of western part of Sumatra before, during and after the earthquake. Relative daily position data is obtained from postprocessing with GAMIT/GLOBK software, implementing the DGPS technique to estimate daily position from GPS RINEX data. GPS measurements shows that during the earthquake, most stations in Mentawai is deformed toward the southwest direction, varies from 8 – 50 mm, and the stations in mainland Sumatra is deformed toward various direction, varies from 5 – 28 mm. There is no anomaly and strange behaviour before the event as the precursor, and the deformation trend one day after the events seems to return to the preseismic pattern.