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Author(s): 

Lugten Peter

Issue Info: 
  • Year: 

    2023
  • Volume: 

    17
  • Issue: 

    45
  • Pages: 

    159-174
Measures: 
  • Citations: 

    0
  • Views: 

    191
  • Downloads: 

    16
Abstract: 

This paper examines the work of Immanuel Kant in the light of a new theory on the nature of truth, knowledge and falsehood (the Inversion Theory of Truth). Kant’s idea that knowledge could be absolutely certain, and that its truth must correspond with reality, is discredited by a dissection of the Correspondence Theory of Truth. This examination of the nature of truth, as well as knowledge and falsehood, is conducted with reference to Sir Karl Popper’s writings on regulative ideas, the criterion of demarcation and the principle of falsifiability. It is argued that if truth is to be regarded as certain, it should be used to describe objects and events in the objective (noumenal) state, and that subjective knowledge must contain (and is improved by) falsehood. Perceptions and knowledge are obtained by the biological and evolutionary process of Active Subjectivism. Ideas we have knowledge of can be metaphysical or scientific, according to Popper’s Criterion of Demarcation. Kant’s “Copernican revolution” claim that our intellect imposes absolutely true laws on nature could not allow for the possibility that ideas might be constructed from fallible perceptions, and hence that all knowledge is uncertain. Instead, he developed a Critique of Practical Reason in which religion, though not provable through logical reasoning, could be proved by our innate moral sense, giving us a Categorical Imperative that could lead to perverse results. By rejecting the absolute certainty of a priori knowledge, and admitting a degree of essential falsehood, we arrive at a more reasonable grounding for moral behavior.

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    9
  • Issue: 

    3
  • Pages: 

    60-75
Measures: 
  • Citations: 

    0
  • Views: 

    699
  • Downloads: 

    0
Abstract: 

One of the most important exploration problems in geophysics is to estimate the geophysical parameters from the observed or residual gravity anomaly related to a buried structure, such as depth, amplitude coefficient and geometrical shape factor. The gravity anomaly expression produced by a simple geometrically shaped model (sphere or cylinder) can be represented by an appropriate analytical formula. Several interpretative methods have been developed to interpret gravity field data assuming a fixed simple geometricalmodel such as a sphere, a horizontal cylinder or a vertical cylinder. In most cases, these methods consider the geometrical shape factor of the buried body to be a priori assumed, and the depth variable may thereafter be obtained by graphical methods applied to the residual anomaly. However, only a few methods have been developed to determine the shape of the buried structure from the residual gravity anomaly. Consequently, the accuracy of the results obtained by these methods depends on the accuracy within which the residual anomaly can be separated from the observed gravity anomaly. In this study, a new and simple method has been developed to estimate the depth, amplitude coefficient and geometrical shape factor of a buried structure from the observed (composite) or residual gravity anomaly related to a cylinder or sphere-like structure. The method is based on nonlinearly constrained mathematical modeling and also stochastic optimization approaches. This method consists of three main steps: The first step is oriented to formulate a nonlinearly constrained optimization model (NCOM) which mathematically describes the geophysical gravity problem related to the studied structure. The (NCOM) model is to optimize a mathematical objective function on an unbounded subset (defined by mathematical inequalities constrains in which the geophysical parameters are generally surmised to satisfy) contained in the free geophysical parameters. Ignoring these mathematical constrains probably leads to general error estimations of the parameters. In this research, the objective function was taken as the statistical likelihood function which depends on the deviations between the observed and synthetic points and also on the number of observations. The second step is directed to suggest an interior penalty function to transform the (NCOM) model into a nonlinearly unconstrained optimization one (NUOM). The goal of using the penalty function is to eliminate the constraints of the (NCOM) model and make them reactive in a new target function of the (NUOM) model. The target function of the (NUOM) model considers both the objective function of the (NCOM) model and the suggested interior penalty function. The third step is to solve the (NUOM) model by the adaptive simulated annealing algorithm, a stochastic approach, well-known for optimizing numerical functions of several real decision variables. The obtained solution of the (NUOM) model includes the geophysical gravity parameters of the studied structure such as: depth, amplitude coefficient and shape factor. A statistical analysis has been carried out to demonstrate the accuracy and the precision of the suggested interpretative method. We applied this method to some theoretical synthetic examples in order to evaluate the precision of the suggested method. We also used the method to estimate the mentioned parameters for the gravity anomaly of the Abadeh site. The obtained results had an appropriate agreement with other methods.

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Issue Info: 
  • Year: 

    2025
  • Volume: 

    57
  • Issue: 

    3
  • Pages: 

    473-484
Measures: 
  • Citations: 

    0
  • Views: 

    0
  • Downloads: 

    0
Abstract: 

For six decades, integrated circuit design and manufacturing have fueled information technology's explosive growth, powering modern computing and advancing contemporary civilization. Advancements in this industry are primarily driven by the shrinking of technology and the reduction of transistor channel length in metal oxide semiconductor devices. This paper examines the impact of these factors on the characteristics and performance trade-offs of metal oxide semiconductor devices, focusing on the inversion coefficient as a key design parameter across all inversion regions (Weak Inversion, Moderate Inversion, and Strong Inversion). The performance trade-offs, analyzed in terms of inversion coefficient in 90nm and 180nm processes, encompass sizing relationships, DC bias and small signal parameters, gain and bandwidth, gate-referred thermal and flicker noise, DC mismatch, gate-source leakage and figure of merit for low-power radio frequency designs. Graphically displaying performance trends against inversion coefficient across two fabrication technologies allows for selection of desired trade-offs as the process is shrunk. Finally, an operating plane for metal oxide semiconductor devices is presented, enabling the selection of appropriate bias points to optimize device performance within the desired circuit as technology scales down.

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Issue Info: 
  • Year: 

    2025
  • Volume: 

    18
  • Issue: 

    10
  • Pages: 

    261-271
Measures: 
  • Citations: 

    0
  • Views: 

    0
  • Downloads: 

    0
Abstract: 

BACKGROUND AND OBJECTIVES: This research investigates the phenomenon of "inversion, " particularly "locative inversion, " in the Persian language and seeks to explain its position alongside other word order change mechanisms such as "scrambling" and "topicalization. " The primary goal is to analyze the pragmatic motivations and the role of information structure in creating these phenomena. METHODOLOGY: This study was conducted using a descriptive-analytical method, relying on natural data derived from everyday speech and written Persian texts. The theoretical framework of the research is based on the principles of "Information Structure" and functional theories (particularly the works of Birner and Ward 1989 and Birner and Mahootian 1996). FINDINGS: The findings indicate that, unlike English, inversion in Persian does not necessarily require the displacement of the subject and verb and occurs primarily in the form of "scrambling" or "topicalization" of a non-subject element (such as a locative prepositional phrase) to the beginning of the sentence. These XSV word order changes are mainly driven by factors such as contrastive focus, topicalization, and overall scene-setting. True inversion with XVS word order, where the subject follows the verb, is rare in Persian and is mostly confined to literary and poetic texts. Furthermore, the element that moves to the pre-posed position typically carries older information or is at least informationally commensurate with the postposed element. CONCLUSION: In general, it can be concluded that what is referred to as "inversion" in the literature on Persian is not an independent syntactic process but rather a specific type of "scrambling" with pragmatic motivations. The three phenomena of scrambling, topicalization, and locative inversion, although distinct in their syntactic form, are all mechanisms for managing information structure and highlighting different parts of the sentence.

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    10
  • Issue: 

    3
  • Pages: 

    139-162
Measures: 
  • Citations: 

    0
  • Views: 

    63
  • Downloads: 

    0
Abstract: 

This study was aimed at examining the types of inversion and their severity using the thermodynamic indices of the atmosphere such as SI, LI, KI and TT at Bandar Abbas Station for 2010-2020. In this study, Radioosvand data at the Bandar Abbas Station was obtained and used from the University of Wioming for the last 11 years (3. 5 local) during the last 11 years (2010 to 2020). The results of the analysis showed that the average number of inversion phenomenon in Bandar Abbas was 501 cases per year, as in some days several types of inversion were observed at different altitude. Of these inversion, about 31. 6 % are related to radiation temperature inversion, 4. 3 % front, and another 64. 1 % for subsidence inversion. Due to the air session underneath, the share of subsidence inversions is more than other types of inversion. In the meantime, the most severe inversion of subsidence was 1354 and the weakest inversions were with 29 cases and fronts. In general, the long-term average intensity coefficient of inversion of Bandar Abbas station with a coefficient of 0. 062 indicates that the intensity of the city's inversion is mostly extremely severe, which can be very destructive effects both environmentally and physical health in the city's residents. Bandar Abbas follow. The correlation between the inversion elements also showed that by reducing the thickness of the inversion layer, the intensity of temperature inversion also increased.

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Issue Info: 
  • Year: 

    2025
  • Volume: 

    20
  • Issue: 

    1
  • Pages: 

    61-65
Measures: 
  • Citations: 

    0
  • Views: 

    9
  • Downloads: 

    0
Abstract: 

Acute uterine inversion is a rare but life-threatening condition that occurs when the uterine fundus collapses into the endometrial cavity, typically following placental separation after delivery. This condition can lead to shock, severe hemorrhage, and even maternal death. The patient is a 23-year-old woman at 39 weeks of gestation who presented with severe abdominal pain, changes in vaginal appearance, and the absence of a palpable uterus on abdominal examination following vaginal delivery. She was immediately transferred to the operating room with a suspected diagnosis of uterine inversion. Under general anesthesia, uterine relaxants were administered, and the uterine fundus was successfully repositioned using a two-handed manual maneuver. The uterus was held in its natural anatomical position for several minutes while uterotonic agents were administered to promote and maintain continued contraction. Fortunately, the patient responded well to the intervention, and the uterine inversion was effectively managed.

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Issue Info: 
  • Year: 

    2000
  • Volume: 

    12
  • Issue: 

    1
  • Pages: 

    51-116
Measures: 
  • Citations: 

    1
  • Views: 

    129
  • Downloads: 

    0
Keywords: 
Abstract: 

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Issue Info: 
  • Year: 

    2009
  • Volume: 

    7
  • Issue: 

    SUPPL 1
  • Pages: 

    0-0
Measures: 
  • Citations: 

    0
  • Views: 

    268
  • Downloads: 

    0
Abstract: 

Introduction: A couple was referred to us for chromosomal study due to having a child with growth delay.Materials and Methods: Lymphocyte cultures from the patients were set up in RPMI1640 supplemented with 20% FBS. High resolution chromosomal banding was performed in all subjects.Results: In all cells, an inversion on the p arm of chromosome (1) of both husband and wife was detected. The karyotypes were assessed as 46, XX, inv. (1) (p31; p34.3) and 46, XY, inv. (p31; p34.3).Conclusions: Therefore the chromosomal study was recommended for their affected child. Interestingly the same inversion was found for the affected child and indeed one of the sisters of this male patient had the same inversion. The phenotypic abnormalities presented in this child could be caused by the possible deletion of the important genes located on this regions or it can be just a coincidence. Chromosome study for all the siblings of this couple was recommended. In addition prenatal diagnosis for the future pregnancies of the all the carriers of this inversion was recommended.

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Author(s): 

Fallah Safari M. | Ghanati R.

Issue Info: 
  • Year: 

    2022
  • Volume: 

    47
  • Issue: 

    4
  • Pages: 

    87-98
Measures: 
  • Citations: 

    0
  • Views: 

    54
  • Downloads: 

    6
Abstract: 

Direct current electrical resistivity imaging is provided by measuring the vertical and horizontal electrical potential variations of subsurface structures using surface and borehole records. To recover the resistivity tomograms from the observed data, a non-linear inverse problem is required to be iteratively solved. A 2. 5-dimensional forward modeling based on the finite-difference method with rectangular meshes is also formulated. The two-dimensional reconstruction of earth resistivity data is implemented using a smoothness constrained inversion algorithm (i. e. Occam’s method), wherein a Gauss-Newton technique for updating the sensitivity function is proposed. After verifying the accuracy and efficiency of the forward modeling and the sensitivity function calculation, the inversion algorithm is tested on synthetic data from both geometrically simple and complicated bodies and a real data set. A stopping criterion based on the noise level, roughly estimated using the method of reciprocal resistance measurements, is also provided leading to preventing over-or under-interpreted structure during the inversion process. The numerical experiments reveal that the proposed inversion algorithm provides stable inversion results and an acceptable representation of the main features and structure of the models without producing spurious effects. Furthermore, to deal with the reliability of the recovered models, a model sensitivity analysis is implemented using the resolution density distribution. All used formulations and concepts are part of a Matlab source code developed during this study.

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Author(s): 

BARHMI R. | FERHATI D.

Issue Info: 
  • Year: 

    1995
  • Volume: 

    24
  • Issue: 

    2
  • Pages: 

    155-157
Measures: 
  • Citations: 

    1
  • Views: 

    85
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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