A differential equation with a known solution is transformed by changing both its dependent and independent variables, and the resulting nonlinear differential equation is then compared with the Schrödinger equation. The method is demonstrated using the confluent hypergeometric differential equation and the solutions to hydrogen, SHO and l=0 Morse potential problems are obtained.

A purely algebraic perturbation theory based on deforming the generators of the dynamical group SU(1, 1) is applied to the l = 0 Morse potential problem with $V(r) = V_0 \left[ {e^{ - 2ar} - 2be^{ - ar} } \right]$ . In particular, perturbations of the form $(e^{ - ar} )^N $ and $(e^{ - ar} )^{ - N} $ are treated explicitly.

Empirical and theoretical foundations for the study of the temporal dynamics of mechanisms contributing to unconscious and conscious processing of visual information; from computational, psychological, neuropsychological, and neurophysiological perspectives.

In the target article Nijhawan speculates that visual perceptual mechanisms compensate for neural delays so that moving objects may be perceived closer to their physical locations. However, the vast majority of published psychophysical data are inconsistent with this speculation.

Our visual system can process information at both conscious and unconscious levels. Understanding the factors that control whether a stimulus reaches our awareness, and the fate of those stimuli that remain at an unconscious level, are the major challenges of brain science in the new millennium. Since its publication in 1984, Visual Masking has established itself as a classic text in the field of cognitive psychology. In the years since, there have been considerable advances in the cognitive neurosciences, and a (...) growth of interest in the topic of consciousness, and the time is ripe for a new edition of this text. Where most current approaches to the study of visual consciousness adopt a 'steady-state' view, the approach presented in this book explores its dynamic properties. This new edition uses the technique of visual masking to explore temporal aspects of conscious and unconscious processes down to a resolution in the millisecond range. The 'time slices' through conscious and unconscious vision revealed by the visual masking technique can shed light on both normal and abnormal operations in the brain. The main focus of this book is on the microgenesis of visual form and pattern perception - microgenesis referring to the processes occurring in the visual system from the time of stimulus presentation on the retinae to the time, a few hundred milliseconds later, of its registration at conscious or unconscious perceptual and behavioural levels. The book takes a highly integrative approach by presenting microgenesis within a broad context encompassing visuo-temporal phenomena, attention, and consciousness. (shrink)

The question of how we can know anything about ideal entities to which we do not have access through our senses has been a major concern in the philosophical tradition since Plato's Phaedo. This article focuses on the paradigmatic case of mathematical knowledge. Following a suggestion by Gödel, we employ concepts and ideas from Husserlian phenomenology to argue that mathematical objects – and ideal entities in general – are recognized in a process very closely related to ordinary perception. Our analysis (...) combines Husserl's insights into the nature of perception and the phenomena of evidence and justification with case studies of the role of intuition in axiomatic set theory. (shrink)

This new edition uses the technique of visual masking to explore temporal aspects of conscious and unconscious processes down to a resolution in the...

Using a metacontrast masking paradigm, prior studies have shown that a target’s color information and form information, can be processed without awareness and that unconscious color processing occurs at early, wavelength-dependent levels in the cortical information processing hierarchy. Here we used a combination of paracontrast and metacontrast masking techniques to explore unconscious color and form priming effects produced by blue, green, and neutral stimuli. We found that color priming in normal observers is significantly reduced when an additional paracontrast mask precedes (...) the target at optimal masking SOAs. However, no reduction of form-priming effects was obtained at similar optimal paracontrast SOAs. We conclude that unconscious color priming depends on an early, wavelength- or stimulus-dependent response of color neurons located at early cortical levels whereas unconscious form priming occurs at later levels. (shrink)

There have been many famine incidents in the human history. Some of these have resulted in the disaster of the people. Muslims have also suffered from these famines. There have been countless famine examples from the time of the Prophet. One of the most significant of these famines is the famine incident that was effective in Madinah and its surroundings during the khalīfat of Umar bin al-Hattab (d. 23/644). This famine, corresponding to the 6th year of the khalīfat of Umar, (...) had negative consequences. In this period when the rains were not falling and the soil almost turned to ash, creatures were harmed, and some deaths occurred. When the opportunities in the city were insufficient to eliminate the shortage, the khalif asked for help from the surrounding provinces. The coming help eased the situation for the people. In this famine year, which is known as the Remade year, Umar did not collect zakat from the public, nor applied a sentence to theft in this period. Umar did everything in his power but as the effects of the famine did not lessen, Umar went to the rain prayer for the drought to disappear. When the rain came, life took its normal course and the people who came to Madinah from the rural parts due to the famine were sent back home by the khalīfa.Summary: There have been famine incidences in different geographies throughout human history. The Hejaz region in Saudi Arabia was also affected by these natural disasters. Mecca, which has a particularly dry climate, has witnessed countless famines from pre-Islamic times to the present day. Madinah, which became a center of attraction with the Prophet's migration, struggled with famines in the times of the Prophet as well as in later periods. Among these famines, the famine experienced during the khalīfat of Umar had considerably heavy consequences.The year of the famine in Madinah was recorded as Amurremade, which means the year was given that name because there was no rain at all, and the soil turned int the color of ash and was swept easily by the wind. The famine, which began in the late 17th year of the Hejira and continued until the beginning of the 18th year, lasted approximately nine months. During this time, the soil dried up, the crops did not grow green and the animals perished. The public was exposed to starvation and misery and had nothing in their hands. The bazaars and markets got empty, there was nothing left to buy and sell. People dug in the ground to find food and ate the lizards and moles they found.The famine had an harder impact on the rural areas of Madinah. Those living in the desert had to take refuge in Madinah when they could not find anything to eat. The severe drought even caused deaths in some tribes. The survivors had to eat whatever they could to stay alive. The animals they butchered had no meat, too. Thus, people removed the skins of dead animals and cooked them and gnawed on them or broke the bones of dead animals and ate the crumbs.When the famine continued for a long time, the living conditions of many people changed. Khalif Umar took some precautions to overcome the troubles of the people. First, he gave the food in the central treasury (Beytulmal) in Madinah to the service of those who suffered from famine. When the food in the Beytulmal did not suffice, he called for his governors to send aid to Madinah and its surroundings. The call was answered. Abundant aid was sent to Madinah from Damascus, Kufah, Basra, Egypt and Yemen. Thanks to the help sent, people were relieved. The aid sent from the provinces was planned to be distributed equally to both the people of Madinah and the people who came from outside and settled around Madinah. For this, Umar tried to determine the number of people in need by assigning some people. After the number of people was determined, he prepared a list showing the names and needs of those who suffered from famine. Documents bearing the seal of Umar were given to the public so that they could buy food. The aid also helped to decrease the prices. Because the prices of almost everything, particularly the basic necessities, had reached very high levels.Khalif Umar thanks to donations supported by governors founded also flour silos for those in need. Those who came to Madinah got food such as flour, bread, dates, grapes etc. In addition, some days, twenty camels were butchered and those who suffered from the famine were invited to get hot meals. For those who could not come, food was sent. This practice was continued regularly every month until the famine ended. When Umar could not find anything to distribute, he designated one family that had food to host another family that could not find food. After the rains started, the Khalif sent the Arabs, who came to Madinah in time of the famine back to their countries. He also funded them form treasury so that they could reach their homes comfortably. The Arab tribes were delighted and thanked for the good treatment Umar showed during the famine.Umar did not collect zakah from the goods during the drought period. However, when famine weakened, he took the zakat of two years together. In the same way, he did not apply the punishment to those who fed themselves illegally because of necessity.Umar worked hard to resolve the people's hardship and took all precautions in the famine period. However, the famine maintained its hard impact. Therefore, Umar decided to go for rain prayer and asked his governors to go to rain prayer, too. When people learned that Umar would pray for the rain, they all joined him. Caliph Umar, taking Abbas with him, wished forgiveness from Allah. The prayers were accepted and plenty of rain came down in and around Madinah. So, the famine came to an end and the people took a breath.Umar, the ruler of the Muslims, did not eat anything different from the people during the famine and sometimes was in a worse situation than the others. Many times, he preferred the benefit of others until the famine ended. For this, he was often hungry. This seriously threatened the Caliph Umar's health. These conditions were not limited to the caliph's person but also affected his family. Because Umar’s family members lived in more misery than other families. The conditions continued in this way until the famine lost its effect. (shrink)

William Booth, the founder of the Salvation Army, initially preached in Methodist Churches, later left this position and formed a social and religious formation called the "Christian Mission". This movement was named "Salvation Army" in 1878. The Salvation Army, organized in many countries, has established nursing homes for elderly, women and children and continues to attract attention and increase its reputation both locally and internationally with aid organizations, rehabilitation of prisoners, natural disasters, fight against human trafficking and aid to refugees. (...) In every region where The Salvation Army is located, there is an administrative centre known as the regional headquarters. Headquarters are headed by the district commander at the international headquarters in London. Smaller districts are run by colonels, larger districts by commissars. Resembling the Catholic Church due to its episcopal structure, the Salvation Army accepts the same beliefs as this church at the point of belief. Although the movement has also the appearance of a Protestant and evangelical church, it approaches the sacraments from a different aspect. In this research, the history, organizational structure, activities, belief principles and practices of the Salvation Army have been tried to be revealed. Descriptive, comparative and chronological methods have been used while conveying the aforementioned issues in order of importance. In addition, the literature was scanned and various sources belonging to the emergence period of the Salvation Army and especially those belonging to them were examined. (shrink)

Muitas expectativas povoam nosso coração de discípulos e missionários, às vésperas da Conferência de Aparecida. Uma delas diz respeito ao diálogo inter-confessional nas suas duas vertentes: ecumênica (com as Con) ssões cristãs) e inter-religiosa (com as demais religiões). Alguns, convictos do valor desta importante diretriz do Concílio Vaticano II, indagam se o diálogo estará devidamente presente nos debates da V Conferência.

Recently, research on uncertainty modeling is progressing rapidly and many essential and breakthrough stud ies have already been done. There are various ways such as fuzzy, intuitionistic and neutrosophic sets to handle these uncertainties. Although these concepts can handle incomplete information in various real-world issues, they cannot address all types of uncertainty such as indeterminate and inconsistent information. Also, plithogenic sets as a generalization of crisp, fuzzy, intuitionistic fuzzy, and neutrosophic sets, which is a set whose elements are characterized by (...) many attributes’ values. In this paper, our aim is to demonstrate and review the history of fuzzy, intuitionistic and neutrosophic sets. For this purpose, we divided the paper as: section 1. History of Fuzzy Sets, section 2. History of Intuitionistic Fuzzy Sets and section 3. History of Neutrosophic Theories and Applications, section 4. History of Plithogenic Sets. (shrink)

Our investigation is concerned with the finite model property with respect to admissible rules. We establish general sufficient conditions for absence of fmp w. r. t. admissibility which are applicable to modal logics containing K4: Theorem 3.1 says that no logic λ containing K4 with the co-cover property and of width > 2 has fmp w. r. t. admissibility. Surprisingly many, if not to say all, important modal logics of width > 2 are within the scope of this theorem–K4 itself, (...) S4, GL, K4.1, K4.2, S4.1, S4.2, GL.2, etc. Thus the situation is completely opposite to the case of the ordinary fmp–the absolute majority of important logics have fmp, but not with respect to admissibility. As regards logics of width ≤ 2, there exists a zone for fmp w. r. t. admissibility. It is shown that all modal logics A of width ≤ 2 extending S4 which are not sub-logics of three special tabular logics have fmp w.r.t. admissibility. (shrink)

Experimental Phenomena of Consciousness is the definitive collection of consciousness phenomena in which awareness emerges as an experimental variable.

Visual stimuli as well as transcranial magnetic stimulation can be used: to suppress the visibility of a target and to recover the visibility of a target that has been suppressed by another mask. Both types of stimulation thus provide useful methods for studying the microgenesis of object perception. We first review evidence of similarities between the processes by which a TMS mask and a visual mask can either suppress the visibility of targets or recover such suppressed visibility. However, we then (...) also point out a significant difference that has important implications for the study of the time course of unconscious and conscious visual information processing and for theoretical accounts of the processes involved. We present evidence and arguments showing: that visual masking techniques, by revealing more detailed aspects of target masking and target recovery, support a theoretical approach to visual masking and visual perception that must take into account activities in two separate neural channels or processing streams and, as a corollary, that at the current stage of methodological sophistication visual masks, by acting in more highly specifiable ways on these pathways, provide information about the microgenesis of form perception not available with TMS masks. (shrink)

Haluk Ogmen and Bruno G. Breitmeyer (eds.): The First Half Second: The Microgenesis and Temporal Dynamics of Unconscious and Conscious Visual Processes Content Type Journal Article Category Book Review Pages 61-65 DOI 10.1007/s11023-011-9266-7 Authors Ramesh Kumar Mishra, Centre of Behavioral and Cognitive Sciences, Allahabad University, Allahabad, India Journal Minds and Machines Online ISSN 1572-8641 Print ISSN 0924-6495 Journal Volume Volume 22 Journal Issue Volume 22, Number 1.

Minimal Semantics asks what a theory of literal linguistic meaning is for - if you were to be given a working theory of meaning for a language right now, what would you be able to do with it? Emma Borg sets out to defend a formal approach to semantic theorising from a relatively new type of opponent - advocates of what she call 'dual pragmatics'. According to dual pragmatists, rich pragmatic processes play two distinct roles in linguistic comprehension: as well (...) as operating in a post-semantic capacity to determine the implicatures of an utterance, they also operate prior to the determination of truth-conditional content for a sentence. That is to say, they have an integral role to play within what is usually thought of as the semantic realm. Borg believes dual pragmatic accounts constitute the strongest contemporary challenge to standard formal approaches to semantics since they challenge the formal theorist to show not merely that there is some role for formal processes on route to determination of semantic content, but that such processes are sufficient for determining content. Minimal Semantics provides a detailed examination of this school of thought, introducing readers who are unfamiliar with the topic to key ideas like relevance theory and contextualism, and looking in detail at where these accounts diverge from the formal approach. Borg's defence of formal semantics has two main parts: first, she argues that the formal approach is most naturally compatible with an important and well-grounded psychological theory, namely the Fodorian modular picture of the mind. Then she argues that the main arguments adduced by dual pragmatists against formal semantics - concerning apparent contextual intrusions into semantic content - can in fact be countered by a formal theory. The defence holds, however, only if we are sensitive to the proper conditions of success for a semantic theory. Specifically, we should reject a range of onerous constraints on semantic theorizing (e.g., that it answer epistemic or metaphysical questions, or that it explain our communicative skills) and instead adopt a quite minimal picture of semantics. (shrink)