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Search Results: 1 - 10 of 293 matches for " Eitan Heldenberg "
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Retinal hemorrhage as a unique ophthalmic manifestation of cerebral hyper perfusion syndrome  [PDF]
Eitan Heldenberg, Arie Bass
World Journal of Cardiovascular Diseases (WJCD) , 2013, DOI: 10.4236/wjcd.2013.34053
Abstract: Cerebral hyperperfusion syndrome (CHPS) is a rare, complication of carotid artery revascularization. Acute retinal hemorrhage is a very rare entity previously described as a manifestation of CHPS following carotid artery stenting (CAS), but to the best of our knowledge, not yet described as a complication of carotid surgery. An Ascending Aorta to bilateral Carotid bypass was performed in a 35-year-old woman with active Takayasu arteritis and 95% symptomatic stenosis of both common carotid arteries. Severe retinal hemorrhage appeared on the second post operative day combined with high blood pressure, brain edema on CT scan and grand mal seizures. It seems that fundoscopic examination following carotid revascularization of tight can be helpful in identifying those patients who develop symptoms suggesting of CHPS.

Retinal hemorrhage as a unique ophthalmic manifestation of cerebral hyper perfusion syndrome  [PDF]
Eitan Heldenberg, Arie Bass
World Journal of Cardiovascular Diseases (WJCD) , 2013, DOI: 10.4236/wjcd.2013.33045
Abstract:

Cerebral hyperperfusion syndrome (CHPS) is a rare disease with complications of carotid artery revascularization. Acute retinal hemorrhage is a very rare entity that has been previously described as a manifestation of CHPS followed by the carotid artery stenting (CAS), but to the best of our knowledge, not yet described as a complication of carotid surgery. An Ascending Aorta to bilateral Carotid bypass was performed in a 35 years old woman with active Takayasu arteritis and 95% symptomatic stenosis of both common carotid arteries. Severe retinal hemorrhage appeared on the second post operative day combined with high blood pressure, brain edema on CT scan and grand mal seizures. It seems that fundoscopic examination followed by the carotid revascularization of tightness can be helpful in identifying those patients who develop symptoms suggesting of CHPS.

Terror Attacks Increase the Risk of Vascular Injuries
Eitan Heldenberg,Adi Givon,Gidon Almogy,Kobi Peleg
Frontiers in Public Health , 2014, DOI: 10.3389/fpubh.2014.00047
Abstract: Objectives: Extensive literature exists about military trauma as opposed to the very limited literature regarding terror-related civilian trauma. However, terror-related vascular trauma (VT), as a unique type of injury, is yet to be addressed.
The Distrusted Truth: Examination of Challenged Perceptions and Expectations  [PDF]
Eitan Elaad
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.65054
Abstract: Three experiments were designed to investigate various aspects of the distrusted truth. In the first experiment, 60 undergraduate students were asked to self-assess their abilities to tell and detect lies, tell truths and trust others. The truth-telling ability was self-assessed higher than all four abilities. Participants further evaluated the importance of the four abilities. The ability to tell the truth convincingly was evaluated as very important. In the second experiment 80 undergraduate students reported that their feelings would be severely hurt if other people question their truthful messages. The third experiment put these attitudes to a test when 60 undergraduate students took part in a truth telling task in which the four judges presumed deception. After each session participants received either a confirming feedback indicating that they were convincing when they told the truth, a challenging feedback indicating that they failed to convince, or no feedback. It turned out that feedback did not affect participants’ subsequent self-assessed truth telling ability. However, predicted success in delivering convincing truths declined when the challenging feedback was introduced. Results were discussed with reference to situations where the perceived ability to tell the truth convincingly may be challenged.
Effects of Guilt, Disbelief, and Assessed Lie-Truth Telling Abilities on Physiological Responses in the Guilty Action Test  [PDF]
Eitan Elaad, Eliane Sommerfeld
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.78108
Abstract: This experiment used a mock crime procedure in which 100 participants were randomly assigned to four experimental conditions in a 2 × 2 factorial design. Two guilt conditions (guilty and informed innocents) were crossed with two human interrogation feedback conditions (believed and not believed). The Guilty Action polygraph test was administered several days after the mock crime and the human interrogation. Along with the common dependent polygraph measures (electro dermal, respiration, and cardiovascular measures), self-assessments of the ability to tell lies and to tell the truths convincingly, were gathered. Results showed enhanced responses to the critical items for all three physiological measures. Respiration responses significantly differentiated between guilty and informed innocent participants. No significant guilt effect was obtained for electro dermal and cardiovascular responses. The feedback manipulation failed to affect all three physiological responses. Informed innocent participants who rated low their ability to tell the truth convincingly elicited larger electro dermal responses to critical items than high raters. Guilty participants who rated high their lie telling ability showed larger electro dermal responses to critical items than low raters. Further research on the association between self-assessment of lie and truth telling abilities and physiological responsivity in the Guilty Action Test is recommended.
Teach Me How to Be a Kindergarten Teacher: Expectations of Kindergarten Student Teachers from Their Mentor Kindergarten Teachers  [PDF]
Aviva Dan, Eitan Simon
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.710142
Abstract: Teaching is a complex task that involves practical and theoretical knowledge. Students gain practical knowledge through practicum that takes place in kindergartens or schools. The student teacher trains under the auspices of an experienced kindergarten teacher or teacher who becomes their mentor. The object of this research was to examine the expectations of student teachers from their mentor kindergarten teachers. Fifty-four student teachers answered a specially written questionnaire, distributed through Google docs, about their expectations from their mentor kindergarten teachers. The data analysis was qualitatively being the most suitable research method to answer the research question being a primarily exploratory research. It is used to gain an understanding of underlying reasons, opinions, and motivations. The results show that the student teachers expect to gain practical knowledge of skills and tools that are important to their profession and that the mentoring relationship will be supportive, encouraging and attentive. The significance of this research is that mentor kindergarten teachers will be more aware of what their mentees expect from this relationship, especially in light of the fact that there is no agreed concept of the mentor’s role in the literature. Therefore, this research can provide important guidelines.
Involvement of Phosphatases in Proliferation, Maturation, and Hemoglobinization of Developing Erythroid Cells
Eitan Fibach
Journal of Signal Transduction , 2011, DOI: 10.1155/2011/860985
Abstract: Production of RBCs is triggered by the action of erythropoietin (Epo) through its binding to surface receptors (Epo-R) on erythroid precursors in the bone marrow. The intensity and the duration of the Epo signal are regulated by several factors, including the balance between the activities of kinesase and phosphatases. The Epo signal determines the proliferation and maturation of the precursors into hemoglobin (Hb)-containing RBCs. The activity of various protein tyrosine phosphatases, including those involved in the Epo pathway, can be inhibited by sodium orthovanadate (Na3VO4, vanadate). Adding vanadate to cultured erythroid precursors of normal donors and patients with β-thalassemia enhanced cell proliferation and arrested maturation. This was associated with an increased production of fetal hemoglobin (HbF). Increased HbF in patients with β-hemoglobinopathies (β-thalassemia and sickle cell disease) ameliorates the clinical symptoms of the disease. These results raise the possibility that specific and nontoxic inhibitors of phosphatases may be considered as a therapeutic modality for elevating HbF in patients with β-hemoglobinopathies as well as for intensifying the Epo response in other forms of anemia. 1. Epo and Proliferation/Maturation of Erythroid Precursors Production of RBCs (erythropoiesis) in the bone marrow depends on the glycoprotein hormone erythropoietin (Epo), which prevents apoptosis and stimulates proliferation of erythroid precursors [1]. The activity of Epo is mediated through its binding to specific surface receptors (Epo-R) [2]. Epo binding induces receptor homodimerization and the initiation of a stepwise signal transduction process [3]. One of the earliest responses detected within cells upon ligand-induced homodimerization is a transient increase in tyrosine phosphorylation of cellular proteins including the receptor. Since the EPO-R, like other hematopoietic cytokine receptors, lacks intrinsic enzymatic activity, the receptor must associate with and activate protein tyrosine kinases in order to transmit a signal. Upon Epo binding, EpoR undergoes phosphorylation on tyrosine residues in the cytoplasmic domain and thereby recruits different SH2-containing signaling molecules, such as the STATs, Shc, SHP-2, and the p85 regulatory subunit of PI3K to activate various signal transduction pathways, most of which are shared with other members of the cytokine receptor family [4]. Four tyrosine phosphatases are involved in regulating erythropoiesis. The SH2-domain containing phosphatases, Shp1 and Shp2, cluster designation 45 (CD45) and
Novos limites para a luta pelos direitos econ?micos e sociais? Dados quantitativos como instrumento para a responsabiliza??o por viola??es de direito humanos
Felner, Eitan;
Sur. Revista Internacional de Direitos Humanos , 2008, DOI: 10.1590/S1806-64452008000200007
Abstract: in spite of positive developments in the last 60 years, the worldwide promotion and protection of economic and social rights remains a daunting challenge. while millions of people are deprived of clean water, primary health care and basic education, most states do not recognize economic and social rights as more than abstract declarations of principles. also, governments and international organizations usually tackle these questions exclusively as development challenges, ignoring their relation to human rights obligations. in this article, there is an initial attempt to set out a methodological framework to illustrate how some simple quantitative methods can be used in concrete situations to assess whether a state is violating its human rights obligations. quantitative tools can help us, as human rights advocates, not only to persuasively show the scope and magnitude of various forms of rights denial, but also in revealing and challenging policy failures that contribute to the perpetuation of those deprivations and inequalities.
Hezbollah: Between the I.D.F.'s Withdrawal and the Establishment of a Lebanese Unity Government --Another Step on the Way to an Islamic Republic in Lebanon
Eitan Azani
Circunstancia , 2009,
Abstract: In July 2008, Fuad Seniora established the National Unity Government in Lebanon which was comprised of 30 ministers. With eleven of these ministers belonging to the opposition headed by Hezbollah, Nasrallah earned the right to veto government decisions. This development, brought Nasrallah one step closer to his organization's goal of establishing an Islamic Republic in Lebanon .An analysis of the processes in the Lebanese arena and of the power structure between various players, since the 2000 withdrawal until the unity government, demonstrates that Hezbollah's standing in Lebanon has improved despite the Second Lebanon War. In addition, Nasrallah has systematically advanced along the path of turning Lebanon into an Islamic Republic, characterized by two parallel efforts: (1) from inside the political system, in order to gain positions of power and influence; and (2) from outside the system, by establishing a military power.The Lebanese government has no choice but to acquiesce to the movement's demands, support the resistance and its goals, and avoid carrying out U.N. Resolution 1701, which requires the country to dismantle the movement's arms capabilities. The balance of power falls significantly in favor of the movement, as it stands strong relative to a weak government and a divided society of many ethnic groups, unwilling to pay the price of a confrontation with Hezbollah.So long as there are no significant changes in the balance of power within Lebanon , Hezbollah will continue to retain control over the Lebanese system.
(GL(2n,C),SP(2n,C)) is a Gelfand Pair
Eitan Sayag
Mathematics , 2008,
Abstract: We prove that (GL_{2n}(C),Sp_{2n}(C)) is a Gelfand pair. More precisely, we show that for an irreducible smooth admissible Frechet representation (\pi,E) of GL_{2n}(C) the space of continuous functionals Hom_{Sp_{2n}(\cc)}(E,C) is at most one dimensional. For this we show that any distribution on GL_{2n}(C) invariant with respect to the double action Sp_{2n}(C) \times Sp_{2n}(C) is transposition invariant. Such a result was previously proven for p-adic fields by M. Heumos and S. Rallis.
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