Estimating the loss of economic predictability from aggregating firm-level production networks.

To estimate the reaction of economies to political interventions or external disturbances, input-output (IO) tables-constructed by aggregating data into industrial sectors-are extensively used. However, economic growth, robustness, and resilience crucially depend on the detailed structure of nonaggregated firm-level production networks (FPNs). Due to nonavailability of data, little is known about how much aggregated sector-based and detailed firm-level-based model predictions differ.

Communication between Autonomous Vehicles and Pedestrians: An Experimental Study Using Virtual Reality.

One of the major challenges of autonomous vehicles (AV) is their interaction with pedestrians. Unofficial interactions such as gestures, eye contact, waving, and flashing lights are very common behavioral patterns for drivers to express their intent to give priority. In our research we composed a virtual reality experiment for a pedestrian crossing in an urban environment in order to test pedestrians' reactions on an LED light display mounted on a virtual AV.

A Creative Concept to empower office workers addressing work-related health risks.

Among office workers, the sedentary work-related health challenges are mainly associated with the fact that they often sit for up to 10 hr a working day. Members of the Research Group conducted a research program to assist the office workers of an international telecommunication company's affiliate in Budapest to enhance comfort levels in the office work environment. The data collection included a Comfort Survey to reveal employees' sense of comfort related to Indoor Environmental Quality (IEQ) components and the characteristics of employees' feelings and behavior during working hours.

Quantifying firm-level economic systemic risk from nation-wide supply networks.

Crises like COVID-19 exposed the fragility of highly interdependent corporate supply networks and the complex production processes depending on them. However, a quantitative assessment of individual companies' impact on the networks' overall production is hitherto non-existent. Based on a unique value added tax dataset, we construct the firm-level production network of an entire country at an unprecedented granularity and present a novel approach for computing the economic systemic risk (ESR) of all firms within the network.

Application of Bivariate Extreme Value models to describe the joint behavior of temporal and speed related surrogate measures of safety.

Limitations of historical crash data and the advantages of surrogate measures of safety have already been stressed by various authors. To describe nearness-to-collision, mostly time-based indicators are applied, and there is a consensus among researchers that speed-related indicators are needed to account for the severity dimension. There have been attempts to fit bivariate Extreme Value models to predict the number of crashes, however modeling crash frequency together with severity has received much less attention.

Are collision and crossing course surrogate safety indicators transferable? A probability based approach using extreme value theory.

In order to overcome the shortcomings of crash data a number of surrogate measures of safety have been developed and proposed by various researchers. One of the most widely used temporal indicators is time-to-collision (TTC) which requires the road users to be on a collision course. Road users that are strictly speaking not on a collision course actually might behave and take evasive actions as if they were, thus indicating that such near-miss situations might also be relevant for safety analysis.

PPV susceptibility of commonly used peach rootstock-scion combinations.

Sharka disease is one of the most devastating plant epidemics of Prunus species, caused by plum pox virus (PPV). The viral infection affects the fruits by weight-loss and degradation of quality properties. Breeding of resistant rootstocks and cultivars is one of the most effective disease control methods.

Skin collagen pentosidine and fluorescence in diabetes were predictors of retinopathy progression and creatininemia increase already 6years after punch-biopsy.

Objective: Advanced glycation end products (AGEs) of collagens appear to contribute to microvascular complications in diabetes. Do high concentrations of AGEs in skin collagen predict accelerated progression of these complications after 6 years and indicate the need for tighter anti-diabetic treatment?

Design And Methods: We measured two AGE parameters in collagen extracted from skin punch-biopsies: pentosidine and fluorescence at 370/440nm, as markers and predictors of microvascular complications, in 30 patients with diabetes (14 type-1, 16 type-2) without renal insufficiency, and in age- and gender-matched normoglycemic controls, followed at Hôtel-Dieu in Paris.

Results: At the time of biopsy, marked increases in pentosidine (p=0.

[Pediatric gynecological operations based on 40 years' experience].

The author analyzes more than 40 years of his own experience concerning the outcome of pediatric gynecology patients who underwent surgery in the Department of Gynecology and Obstetrics, Debrecen University in Hungary. Traditional surgical interventions were performed, and, some new methods elaborated by the author. The age of patients who underwent surgery ranged from infancy to 18 years.

Interaction of cetyl-trimethylammonium bromide with swollen and collapsed poly(N-isopropylacrylamide) nanogel particles.

The interaction of cetyl-trimethylammonium bromide (CTAB) with swollen and collapsed poly(N-isopropylacrylamide) (pNIPAM) monodisperse nanogel particles was investigated by electrophoretic mobility, dynamic light scattering, and potentiometric surfactant activity measurements. The surfactant binds to the nanogel particles as monomers in the whole CTAB concentration range and binds in the form of surfactant aggregates as well above a critical concentration (cac) in both the swollen and collapsed state of the pNIPAM. The swollen particle system is a thermodynamically stable solution.

Correlations between urinary excretion of catecholamines and electrocardiographic parameters of vagal hyperreactivity in infants with fainting spells. Implication of sympathetic hypotonia?

Background: Vagal hyperreactivity (VHR) is a frequent etiology of infant fainting spells; but it is sometimes difficult to diagnose. A biochemical test would therefore be useful, especially as the oculocardiac reflex (OCR) test innocuity is not absolute.

Aims: To evaluate urinary excretions of norepinephrine, epinephrine and dopamine as markers for vagal hyperreactivity.

Double probing individual human spermatozoa: aniline blue staining for persistent histones and fluorescence in situ hybridization for aneuploidies.

Objective: To study the potential relationship between two sperm nuclear attributes: persistence of histones and occurrence of chromosomal aneuploidies.

Design: The two variables were examined by double probing of the same spermatozoa.

Setting: Academic Andrology Laboratory.

Female child sexual abuse within the family in a Hungarian County.

Background: The aim of the study was to analyze the characteristics of intrafamiliar female child sexual abuse and to explore common features that may be utilized as targets for possible methods of prevention. We also described the medical and legal approaches to handling child neglect.

Methods: This was a descriptive, cross-sectional study on 52 sexually abused girls under the age of 18 at the Department of Obstetrics and Gynecology, Medical and Health Science Center of Debrecen.

Characteristics of female child sexual abuse in Hungary between 1986 and 2001: a longitudinal, prospective study.

Objective: To summarize the characteristics of female child sexual abuse and to explore common features that may be utilized as targets for possible methods of prevention.

Design: Prospective, longitudinal study.

Setting: A Hungarian county, University of Debrecen.

Predictive value of hysteroscopic examination in intrauterine abnormalities.

Study Objective: This study was set up to evaluate the predictive value of hysteroscopic examination in patients referred to the Department of Obstetrics and Gynecology at the Medical and Health Science Center, Debrecen, Hungary.

Study Design: The authors performed 835 biopsies by hysteroscopy over more than 13 years. They compared their findings with histological findings held in a a computerized clinical database.

Follow-up study on the effectiveness of transcervical myoma resection (TCRM).

Study Objective: To measure the efficacy of transcervical hysteroscopic fibroid resection (TCRM) among the authors' patients.

Study Design: In one department, 73 transcervical hysteroscopic fibroid resections were performed on 68 patients over a 6-year period. Using a computerized database and mailed questionnaires, 58 patients were followed up.

[Child sexual abuse].

Authors review the epidemiology of child sexual abuse. They summarize the individual, social and medico-legal aspects of sexual violence. They present an achievable approach for managing and preventing sexual crime concerning the circumstances of public health and the current laws in Hungary.

[Numerical chromosome anomalies in human sperm at low sperm concentration].

Introduction: With the assisted reproduction techniques the natural selection of sperm is bypassed on different levels.

Aim: The aim of the present work is to determine the frequencies of sperm numerical chromosome aberrations in infertile men with low sperm count and to examine the relationship between the spermatogram parameters (sperm count and motility) and the aneuploidy and diploidy frequencies.

Methods: 32 men with low sperm count were investigated.

Gadolinium, a mechano-sensitive channel blocker, inhibits osmosis-initiated motility of sea- and freshwater fish sperm, but does not affect human or ascidian sperm motility.

Exposure to hypo-osmotic or hyperosmotic environment triggers the initiation of fish sperm motility. In this article, we report that calcium and potassium channel blockers do not influence motility of puffer fish sperm but calmodulin antagonists reversibly decrease it, suggesting that calmodulin-Ca(2+) interactions are prerequisite for the initiation of sperm motility in this species. Gadolinium (a stretch activated ion channel blocker) decreased the motility of puffer fish sperm from 92 +/- 3% to 6 +/- 3% and that of carp sperm from 91 +/- 7% to 3.

Efficacy of the swim-up method in eliminating sperm with diminished maturity and aneuploidy.

Background: We have previously shown that after 80% Percoll centrifugation there is an overall 2.7-fold reduction of sperm with chromosomal disomies and diploidies (3.2-fold and 2.

[Results of transcervical septotomy in infertility].

Introduction: The anatomical abnormalities of the uterus could be the cause of infertility and spontaneous abortion in several cases.

Objects: Authors would like to measure the successfulness of a modern endoscopic operative method among their own patients and the outcome of the pregnancies.

Methods: Between 1st of January 1993 and 31st of December 1999 authors performed hysteroscopic septotomy in 66 patients with the history of recurrent miscarriage or uterus septum causing infertility.

Effect of an oral contraceptive containing drospirenone and ethinylestradiol on general well-being and fluid-related symptoms.

Oral contraception is the most widely used reversible contraceptive method. Continuous research over the past decades has led to a range of highly reliable, effective and safe oral contraceptives. Newly developed progestogens may also provide additional non-contraceptive health-related benefits that differentiate the products from each other.

[Effectiveness of laparoscopic sacrouterine nerve ablation in our department during the last six years].

Introduction: Chronic pelvic pain is a very common disease in women. As a final and life-long solution laparoscopic sacrouterine nerve ablation (LUNA) is generally used in the daily practice.

Objective: To investigate the effectiveness of LUNA by evaluating their results.

[Isolated ovarian abscess in the puerperium].

Isolated ovarian abscess is the infection of the ovary without tubal involvement. A number of predisposing factors have been identified. The appearance after spontaneous vaginal birth is rare.

[Evaluation of results in transcervical hysteroscopic myoma resection].

Introduction: The benign uterine fibroid is one of the most common cause for complains of females. The most important aim of the medicine nowadays is to treat the patient with minimally invasive methods, saving the organ.

Objects: Authors evaluate the efficacy of the transcervical hysteroscopic fibroid resection (TCRM) among their patients.